Let's Do Mathematics 2 – Worktext A by Regal_Education

n ca t Wo r k t e xt x

for le arne arners 7 - 8 year s o l d

Let’s Do Mathematics

Re ga le du ca tio n

Let’s Do Mathematics is a series covering levels K-6 and is fully aligned to o the United States Common Core State Standards (USCCSS). Each level consists of two books boo (Book A and Book B) and combines textbook-style presentation of concepts oncepts pts as well as workbook practice.

Central to the USCCSS is the promotion of problem-solving skills ls and reasoning. Let’s Do Mathematics achieves this by teaching and presenting ng g concepts through throu a problem-solving based pedagogy and using the concrete-pictorial-abstract pictorial-abstract torial-abstract ((CPA) approach. Learners acquire knowledge and understanding a ng off concepts through thr th guided progression beginning with concrete examples and experiences which then w flow into pictorial representations and finally mastery at the and symbolic level. e abstract an a This approach ensures that learners develop a fundamental understanding of concepts damental ental understa underst rather than answering questions by learned procedures edures es and algorithms. algorit

Key features of the series include:

Anchor Task

Numbers to 1000

sk Anchor Task

Open-ended activities serve as the starting point for understanding new vities concepts. Learners engage in activities e and discussions to form concrete experiences before the conceptt is formalized.

141

Let’s Learn n

Concepts are presented sented in a clear and a colorful manner.. Worked rked problems problem provide learners step-by-step ers with ith guided step-by ste progression through Series gh examples. Ser mascots provide rovide de guidance through throug throu helpful comments new nts and nd observations when w concepts pts are e introduced. introduce

2-Step Word Prob lems Let’s Learn

Blake has 12 toy cars. Dominic has 3 more How many toy cars toy cars than Blake. do they have altoge ther?

In January, Jorda n saves $36. In February, he saves $15 more than in January. How much mone y did he save in total?

First, let’s find how many cars I have.

Step 1

Step 1 Find the amount of money Jordan saves in $36

Blake’s cars

February.

$15

January

Dominic’s cars

February

To find the numb er of cars that Domin ic has, we add. 12 + 3 = 15 Dominic has 15 toy cars. Now we can find the total number of toy cars. Step 2

ry.

Step 2 Add the amounts togeth

er to find the total.

$36

$51

Blake’s cars

Dominic’s cars

January

February

12 + 15 = 27 Blake and Domin ic have 27 toy cars altogether. 122

6 1 5 5 1

36 + 15 = 51 Jordan saves $51 in Februa

36 + 51 = 87 Jordan saved $87 in total.

3 6 + 5 1 8 7

123

Let’s Practice

Let’s Practice 1.

clarinet 60 cm

violin

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36 cm

trumpet

88 cm

(a) The trumpet is

cm longer than the

clarinet.

cm longer than the

violin. vi

(b) The trumpet is

cm. has a length of (a) The toothpaste cm. length of (b) The comb has a cm. a length of has ush toothbr (c) The toothpaste. cm shorter than the (d) The comb is comb. cm longer than the is ush toothbr The (e) is the longest. (f) The is the shortest. Th (g) The

210

cm shorter than the

is the longest.

(d) The

is the shortest.

(e) The

(f) Arrange the objects

from the longest to

shortest.

21 1

At Home

Halle asked her friend s their favorite fruit. She made a table from the data she collected. What’s your favorite fruit? Apples! Mangoes!

Make a bar graph aph from the tabl table. Answer the questi ons ns and use tthe space to show Class 2A’s Favor Cl

Water

Milk

My Friend ds’ ss’ Favor

Apple juice

ite Drink

ite Fruits

Mango

Apple

Banana

Peach

bar graph from m the

table. My Friend ends’ s’ Favorite Fr Fruits

Fruit

Help Halle make a

your working.

ite Drink

Orange juice

Class 2A’s Favor

Further practice designed to be completed without the guidance of a teacher. Exercises and problems in this section follow on from those completed under Let’s Practice.

clarinet.

Numb ber er of people

At Home

of the objects.

Compare the lengths Fill in the blanks.

Learners demonstrate their understanding of concepts through a range of exercises and problems to be completed in a classroom environment. Questions provide a varying degree of guidance and scaffolding as learners progress to mastery of the concepts.

Compare the lengths Fill in the blanks.

Type of drink

Friends

296

Hands On

Play this game in groups of

Hands On

Learners are encouraged to ‘learn by doing’ through the use of group activities and the use of mathematical manipulatives.

3 or 4.

297

o on your table. Place different 3-D shapes by saying the number of faces, One player describes a shape edges and vertices. Th This 3-D shape has 2 faces.

1. 2.

shape is the winner he first player to pick the correct The ribess the next shape. describe

and

It’s a cylinder!

Solve it!

Solve It!

Re g

A B

Activities that require learners earners ers to apply logical lo reasoning and problem-solving. are often em-solving. solving. Problems Proble posed which do not for solving ot have e a routine strategy strate s them. Learners are encouraged ncouraged to think creatively and apply a range of problem-solving roblem-solving heuristics. heu

Looking king Back

A beetle is crawling around a garden. It starts at position A and crawls for 36 m. At which position does the beetle stop? D 9m

The beetle stops at position 2.

Jordan is running around the soccer field. He starts at position A and runs for 400 m. At which position does he stop? D

100 m

50 m

A B Jordan stops at position

215

(b)

Looking Back Write the number in numerals and words.

(a)

Consolidated olidated practice w where learners demonstrate on a monstrate their understanding underst und range nge of concepts taught taugh within a unit.

Fill in the blanks. Write the number in numerals and words.

Tens

Hundreds

Ones

(b)

Fill in the blanks.

tens

hundreds

ones

(a) +

500 +

+9=

Write the number. The digit 9 is in the ones place. The digit 8 is in the hundreds place. The digit 2 is in the tens place. 243

242

iii

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Contents 1 Addition and Subtraction to 20

Adding by Counting On ble bles Adding Using Doubles and Near Doubles Adding by Making 10 Subtraction by Counting Back Subtraction Using Double Facts Subtraction by Making 10

2 Addition and Subtraction too 100

Addition Without Regrouping ouping pin Addition With Regrouping uping ping o-digit digit Numbers Num Numb Adding Multiple Two-digit 1-Step Addition Word Problems Problem Subtraction Without hout ut Regrouping Regrou Subtraction With Regrouping Regroup g 1-Step Subtraction ractio act Word Problems 2-Step Word Problems ord Problem Proble

rs to 1,00 1,000 3 Numbers

Hundreds, and Ones ndreds, eds, Tens an lace ce Value to 1,0 1,1,000 Place Comparing mparing Numbers Nu to 1,000 Even Numbers Odd and Eve Skip Co Counti Counting and Number Patterns R p Repeated Addition and Arrays

2 4 14 20 28 34 37

60 65 74 84 90 100 108 114 122

140 142 158 178 198 216 229

Adding 100s and 10s Addition Without Regrouping Addition With Regrouping

248 250 2 258 272 2 27

4 Addition to 1,000

Addition and Subtraction to 20

Anchor Task

–3

–4

Adding by Counting On

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Let’s Learn

How many apples are there in all? Let’s count on.

Count on from the greater number.

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7 + 4 = 11 There are 11 apples ples in all.

Find 9 + 5. Count on the he number line lin to add.

9 + 5 = 14

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How many books are there in all? Count on to find 15 + 4.

6 16

15 + 4 = 19 There are 19 books in all. Find 3 + 15.

Count on your fingers. 15, 16, 17, 18.

Count on from 15 on ne. a number line.

10 0

112 2

3 + 15 = 18

Add by counting on. Write an addition equation. q (a)

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(c)

(b) b)

(d)

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Let’s Practice

Add by counting on. Write an addition equation. (a)

Re ga le du ca tio n

(b)

(c)

(d)

Use the number on from the greater number. mberr line to count coun co Complete the equation.

12 13 14 15 16 17 18 19 20

(a) a) 6 + 5 =

(b) 3 + 8 =

(d) 5 + 9 =

(e) e) 4 + 9 =

(f) 5 + 7 =

(g) 7 + 3 =

(h) 9 + 2 = 7

Use the number line to count on from the greater number. Complete the equation.

Re ga le du ca tio n

12 13 14 15 16 17 18 19 20 2

(a) 5 + 11 =

(b) 10 + 5 =

(d) 11 + 3 =

(e) 14 + 4 =

(f) 15 + 4 =

(g) 18 + 2 =

(h) 17 + 3 =

(i)

(j)

4 + 15 =

12 + 4 =

Add.

(a)

1 5 + 3

(b)

1 1 + 1

(c)

1 2 + 5

(d)

1 4 + 2

(e) (e

1 8 + 1

(f)

1 3 + 2

(g) (g

1 4 + 5

(h)

1 1 + 5

(i)

1 5 + 2

Solve It!

ati on

Which country is Steve from?

Re ga le du

Add. Then write the letters in the spaces below.

(a) 2 + 9 =

(b) 8 + 4 =

(d) 9 + 5 =

(e) 8 + 5 =

(f) 12 + 4 =

(g) 16 + 3 =

(h) 15 + 5 =

(i)

1 + 14 =

17 9

At Home Use the number line to count on from the greater number. mber. Complete the equation.

Re ga le du ca tio n

12 13 14 15 16 6 17 1 18 19 20

(a) 5 + 7 =

(b) 5 + 9 =

(d) 13 + 6 =

(e) 2 + 13 =

(f) 15 + 2 =

(g) 8 + 5 =

(h) 14 + 3 =

(i)

(j)

16 + 4 =

4+7=

Add.

(a)

1 1 + 3

(b) b)

1 5 + 4

(c)

1 2 + 3

(d)

1 7 + 1

(e)

1 0 + 6

(f)

1 2 + 2

(g)

1 2 + 1

(h)

1 3 + 5

(i)

1 6 + 3

Color the ten frames to find the missing addend. Complete the equation.

Re ga le du ca tio n

(a)

= 11

= 14

12 +

= 17

16 +

= 20 0

(b)

(c)

(d)

Complete the equations. equations (a) 8 + (c)

(e) 16 1 +

= 12

+ 4 = 13

= 18

(b) 9 +

= 14

(d) 15 +

= 19

(f)

(g)

+ 4 = 17

(h) 14 +

(i)

+ 2 = 20

(j)

+ 3 = 19

= 15

+ 11 = 16

Fill in the missing numbers. (a)

Look! k! 3 + 7 = 10 1 Ca an you Can pattern? ou see a p

14 4

10 3

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ati on

Solve It!

(b)

((c) c))

(d)

(e)

Fill in the missing numbers. (a)

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5 and 11 is 16.

(b)

(d)

(e)

Adding Using Doubles and Near Doubles Do

Re ga le du ca tio n

Let’s Learn

We can use doubles to add. A double is when both numbers we are adding are the same. same sam Double 6

6 + 6 = 12

Double 7

7 + 7 = 14

Double 8

8 + 8 = 16

Double 9

9 + 9 = 18

Double 10

10 + 10 = 20

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We can use near doubles to add. Let’s find 8 + 9.

Re ga le du c

8 + 9 is the same me as double 8 and one more. re

8+9

= =

16 + 1 17

Let’s use near doubles to find d 8 + 7.

8 + 7 is the same as double 8 and one less.

8+7

= =

16 – 1 15 5

Let’s Practice Use doubles and near doubles to complete the equations.

Re ga le du ca tio n

(a)

6+6=

6+7=

6+5=

7+7=

7+6=

7+8=

5+5=

5+6=

5+4=

(b)

(c)

Re ga le du ca tio n

(d)

8+8=

8+9=

8+7=

9+9=

9+8=

9 + 10 =

(e)

Use doubles ubles es and near doubles do to complete the equations. (a) 8 + (c) c)

(e 6 + (e)

= 16

(b) 6 +

= 12

+ 7 = 15

(d) 7 +

= 14

= 11

(f)

(g)

+ 9 = 18

(h) 8 +

(i)

+ 9 = 19

(j)

+ 7 = 13

= 14

+ 10 = 20

At Home Use doubles and near doubles to complete the equations. quations. tions.

Re ga le du ca tio n

(a) 8 + 8 =

(b) 8 + 9 =

(d) 9 + 10 =

(e) 9 + 8 =

(f) 6 + 7 =

Add.

(a)

5 4

(b)

1 0 + 1 0

(e))

(d)

1 0 + 9

(f)

9 9

8 7

nd near do doub Use doubless and doubles to complete the equations. (a) 8 +

(c)

(e)) 5 +

(c)

7 7

= 15

+ 10 = 20 = 11

((b) 6 +

= 13

(d) 8 +

= 17

(f)

+ 7 = 16

Solve It!

du c

tio n

Sophie sorted her blocks into two piles. She wanted a quick way to find out how many blocks cks she he had. had

Re ga l

(a) Her first pair of piles had 8 blocks the blocks and ocks each. Draw Dra Dr show how many she had. How many did she have in all?

Sophie has

blocks in i all. a

(b) When she e looked ooked under und the th bed, she found 3 more blocks. Show piles she had. How many did she ow the new pil have in all no now?

Sophie has

blocks in all. 19

Let’s Learn

ed uc ati on

Adding by Making 10 Halle has 8 flowers. Chelsea gives her 7 more flowers. How many flowers does Halle have in all? 8

Make a group of 10 and add the ten and ones.

10 + 5 = 15 flowers in all. Halle has 15 flo flowe

8+7 2

= 10 + 5 = 15 5

Re ga le du ca tio n

There are 9 orange cubes and 5 purple cubes. How many cubes are there altogether?

10 + 4 = 14 There are 14 cubes altogether.

9+5 1

= 10 10 + 4 = 14 14

Find 7 + 6.

7 + 6 = 13

7+6 3

= 10 + 3 = 13

Re ga le du ca tio n

How many cookies in all? Let’s find 12 + 7.

12 Make a group of 10 and add the ten and ones.

12 + 7

2+7=9

= 10 + 2 + 7 = 10 + 9 = 19

12 + 7 = 19

Find 13 + 5.

13 3

10 0

13 + 5

13 + 5 = 18

= 10 + 8 = 18

Let’s Practice Make a ten. Fill in the blanks.

Re ga le du ca tio n

(a)

8+6=

= 10

10 +

= 14

(b)

7+5=

(c)

9+8=

(d))

8+7=

Make a ten. Fill in the blanks.

Re ga le du ca tio n

(a)

5+8=

(b)

(c)

(d)

(e)

(f)

(g))

9+5=

6+8=

7+8=

9+7=

8+9=

4+7=

= 10

10 +

= 13

Make a ten. Fill in the blanks. 13 3+4

(a)

Re ga le du ca tio n

13 + 4 = 10 +

(b)

14 + 5

14 + 5 =

(c)

12 + 6

12 + 6 =

(d)

13 + 7

13 + 7 =

Make a ten. Fill in the blanks.

Re ga le du ca tio n

(a) 15 + 4

= 10 + =

(b) 12 + 7

(d) 13 + 6

(e) 11 + 8

(f) 14 + 4

(g) ( 12 + 5

At Home Complete the equations.

Re ga le du ca tio n

(a) 7 + 9 =

(b) 11 + 9 =

(d) 13 + 5 =

(e) 7 + 6 =

(f) 9 + 8 =

Add.

(a)

(d)

1 5 + 4

(b)

1 2 + 6

(e)

7 8

(c)

1 4 + 4

1 4 5 +

(f)

1 2 + 5

Complete the he equations. (a) 9 + (c)

= 15

(b) 6 +

= 19

+ 8 = 17

(d) 3 +

= 17

e) 5 + (e)

= 12

(f)

((g) 6 +

= 18

(h) 6 +

= 15

(j)

= 20

(i)

+ 15 = 17

+ 7 = 18

Subtraction by Counting Back

Re ga le du ca tio n

Let’s Learn

Sophie has 12 flowers. She gives her friend 4 flowers. How many flowers does she have left?

Count back 4 flowers.

12 – 4 = 8 werss left. Sophie has 8 flowers

olates in a box. bo There are 14 chocolates hocolates. Blake eats 5 chocolates. How many ny chocolates ocolates are a left?

nt back from 14 1 to find the answer. Let’s count 8

14 – 5 = 9 There are left. re 9 chocolates c

Re ga le du c

A butterfly lays 18 eggs. 4 eggs hatch. w many eggs did not hatch? How

Let’s t’s count back from 18. 18

14 4

15 5

18 – 4 = 14 tch. h. 14 of the eggs did not hatch.

0 by y counting counti coun Find 5 less than 20 back on a number line.

12 12

20 – 5 = 15

Let’s Practice Count back to subtract.

Re ga le du ca tio n

(a)

12 13 14 15 16

16 – 4 =

(b)

8 9 10 11 12 13 3

13 – 5 =

(c)

15 16 17 18 19

19 – 4 =

(d)

12 13 14 15 16 17

17 – 5 =

(e)

17 18 19 20

0–3= 20

Complete the subtraction equation.

Re ga le du ca tio n

(a)

–

(b)

Subtract.

(a) 11 – 5 =

(b) 17 – 4 =

(d) 15 – 2 =

(e) e) 20 – 4 =

(f) 18 – 5 =

Subtract.

(a)

1 2 5 –

(b (b)

1 1 – 3

(c)

1 4 – 5

(d)

1 7 – 2

(e)

1 3 – 4

(f)

1 9 – 5

Play this game in pairs.

ca tio n

Hands On

Take 20 linking cubes, 10 in each color.

Now make two stories that involve subtraction, action, tion, or taking takin away. Give them to your partner to solve.

Re ga le

Change roles and solve stories. e your partner's pa p

Draw picturess of the cubes cube cub to show the subtraction, and write a number sentence. entence. ence.

At Home Use the number line to count back. Complete the equation.

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12 13 14 15 16 6 17 18 19 20

(a) 11 – 2 =

(b) 12 – 3 =

(d) 16 – 4 =

(e) 17 – 3 =

(f) 20 0–5=

(g) 18 – 2 =

(h) h) 20 0–1=

(i)

(j)

18 – 5 =

19 9–3=

Subtract.

(a)

1 5 – 3

(b) b)

1 6 3 –

(c)

1 7 – 3

(d)

1 3 – 4

(e)

1 4 – 5

(f)

1 8 – 5

(g)

2 0 – 2

(h)

1 9 – 2

(i)

1 1 – 3

Subtraction Using Double Facts

Re ga le du ca tio n

Let’s Learn

Use double facts to help find 16 – 8. Double 8 is 16.

We know 8 + 8 = 16. So, we can see that 16 – 8 = 8 8

Double facts help with th adding ng and subtracting mentally. Double

Adding g

Su Subtracting

2+2=4

4–2=2

3+3=6

6–3=3

4+4=8

8–4=4

5 + 5 = 10

10 – 5 = 5

6 + 6 = 12

12 – 6 = 6

7 + 7 = 14

14 – 7 = 7

8 + 8 = 16

16 – 8 = 8

9 + 9 = 18

18 – 9 = 9

10 + 10 = 20

20 – 10 = 10

You can use number bonds to help you.

Let’s Practice

Re ga le du ca tio n

Use doubles to add and subtract. Complete the equations. (a)

4 =

–

(b)

–

(c)

(d)

(e))

At Home Use doubles to add and subtract. Match the equations.

Re ga le du ca tio n

(a) 5 + 5 =

18 – 9 =

(b) 9 + 9 =

10 – 5 =

(c)

6+6=

14 – 7 =

(d) 8 + 8 =

12 – 6 =

(e) 10 + 10 =

16 – 8 =

(f) 7 + 7 =

20 – 10 =

Subtract. act.

(a) (a

1 8 – 9

(b)

1 4 – 7

(c)

1 2 – 6

Subtracting by Making 10 Let’s Learn We can subtract by taking away the ones and adding to a 10.

Re ga le du c

There are 18 apples on a tree. Halle picks 5 apples. How many apples are left?

18 is 10 and 8.

8–5=3

13 18 – 5 = 13

8 – 5 =3 110 0 + 3 = 13 13

18 – 5 = 13 3 apples left. There are 13

We can subtract by getting 10 first.

Re ga le du ca tio n

A baker has 14 cupcakes. She sells 6 cupcakes. How many cupcakes does the baker have left?

First, subtract 4 to make 10.

14 – 6 = 8 4

14 4 – 4 = 10 10 10 0–2=8

14 – 6 = 8 The baker has h 8 cupcakes left.

Then, subtract 2 from the 10.

We can also subtract from 10 first.

Re ga le du ca tio n

Ethan has 13 goldfish. He gives 6 goldfish to Dominic. How many goldfish does Ethan have now? First, make a group of 10 goldfish. 13 is 10 and 3.

You cannot subtract 6 from 3. You can subtract 6 from 10. Now add 4 and 3.

13 – 6 = 7

10 – 6 = 4 4+3=7

13 3–6=7 goldfish now. Ethan has 7 g goldf

Let’s Practice Subtract by taking away the ones and adding to the he 10. 0. Fill in the blanks and complete the equations. (a)

al ed uc ati on

15 – 2 = 13

10 (b)

R 40

10 +

18 – 6 =

(c)

–

116 – 3 =

–

Re ga le du ca tio n

(d)

17 – 4 =

–

(e)

15 – 3 =

(f)

119 – 6 =

Subtract by getting 10 first. Fill in the blanks and complete the equations.

Re ga le du ca tio n

(a)

14 – 5 =

–

(b)

15 – 8 =

(c)

16 – 7 =

Subtract by first subtracting from 10. Fill in the blanks and complete the equations. (a)

Re ga le du ca tio n

12 – 7 =

–

(b)

15 – 8 =

(c)

16 – 9 =

At Home Cross out the objects to get 10 first. Complete the equations.

Re ga le du ca tio n

(a)

14 – 5 =

14 – 4

10 –

(b)

16 – 9 =

–

(c)

13 – 8 =

Re ga le du ca tio n

(d)

14 – 6 =

–

(e)

13 – 6 =

(f)

17 – 9 =

Subtract by taking away the ones and adding to the 10. Fill in the blanks and complete the equations.

Re ga le du ca tio n

(a)

(b)

(c)

(d)

(e) e)

18 – 4 =

17 – 4 =

16 – 5 =

19 – 6 =

19 9–4=

8 –

10 +

= 14

–

Subtract by first subtracting from 10. Fill in the blanks and complete the equations. (a)

Re ga le du ca tio n

(b)

(c)

(d)

(e) e)

13 – 8 =

12 – 9 =

14 – 6 =

15 – 7 =

13 3–9=

10 – 8

2 +

3 =

–

Let’s Practice

Re ga le du ca tio n

Complete the number bond. Write the number fact family. (a)

= 14

14 –

= 14

4 – 14

(b)

–

(c)

Re ga le du ca tio n

(d)

–

(e)

(f)

Hands On

ed uc ati on

Using number cards 1-10 and a one-minute timer, play y Sum m War. 1.

Divide the pack into two, shuffled and face down. wn.

Each player turns over one card.

entences ences as they th can in Both players make as many addition sentences 1 minute.

If they run out of addition sentences, many ces,, write as m subtraction sentences as they can.

When one minute is over, the he player with the most sentences takes the cards.

Repeat until all the cards rds are e gone.

Ethan and Blake counted their coins.

ati on

Solve It!

They found they had 18 coins altogether.

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(a) Make two different addition subtraction sentences on and subtra ns each ach of the th showing how many coins them could have.

(b) If Ethan n has as 6 c coins, oins, how many does Blake have? Make a number number sentence showing how you know. ber bond ond and a n

At Home

Re ga le du ca tio n

Complete the number bond. Write the number fact family. (a)

–

(b)

–

(c)

–

(d)

(e)

+ +

(f)

le du ca tio n

–

Re g

114

–

Looking Back Add by counting on. Write an addition equation.

Re ga le du ca tio n

(a)

(b)

Use the number line e to count on from f the greater number. Complete the equations. ions. ns. 6

12 13 14 15 16 17 18 19 20

(a) 7 + 5 =

((b) 12 + 5 =

(d) 13 + 3 =

(e) 3 + 16 =

(f ) 11 + 2 =

(g) 18 + 2 =

(h) 4 + 14 =

(i)

(j)

5+9=

14 + 5 =

Add. (a) 1 1 + 5

(b) 1 5 + 2

(d) 1 5 + 1

(e) 1 0 + 5

(f) 1 4 + 3

Re ga le du ca tio n

Make a ten. Fill in the blanks. (a) 6 + 8 =

(b) 9 + 8 =

Make a ten. Fill in the he blanks. blanks.

11 + 8

11 11 + 8 =

Complete the equations. (a) 12 + 7 =

Re ga le du ca tio n

(b) 11 + 6 =

(d) 15 + 3 =

(e) 7 + 9 =

(f) 9 + 8 =

Add.

(a)

(d)

1 5 + 2

(b)

1 1 + 7

(e)

1 3 6 +

1 4 + 2

(f)

1 2 + 7

Complete the equations. qu qua

(c)

= 14

(b) 6 +

= 18

+ 2 = 17

(d) 5 +

= 17

(e) 13 +

= 19

(f)

+ 8 = 16

Use e the he number line to count back. Complete the equations. 6

(c)

(a) 9 +

7 4

12 13 14 15 16 17 18 19 20

(a) a) 1111 – 3 =

(b) 14 – 6 =

(d) 13 – 7 =

10. Use doubles to add and subtract. Complete the equations.

Re ga le du ca tio n

(a)

–

(b)

(c)

11.

Subtract by taking away the e ones and adding a to the 10. Fill in the blanks and complete mplete ete the equations. eq e (a)

18 – 4 =

–

(b)

117 – 5 =

12. Subtract by taking away the ones and adding to the 10. Fill in the blanks and complete the equations.

Re ga le du ca tio n

(a)

(b)

(c)

18 – 7 =

17 – 4 =

16 – 3 =

–

irst subtracting subtractin subtract 13. Subtract by first from 10. Fill in the blanks ankss and complete comple the equations. com (a)

(b)

12 – 5 =

15 – 9 =

–

14.

Subtract. 1 5 – 2

(b)

1 1 – 7

(e)

1 7 – 4

(c)

1 4 – 2

(f)

1 3 – 6

Re ga le du ca tio n

(a)

(d)

1 2 – 7

15. Complete the number bond. Write the number fact family. ly. (a)

–

(b)

–

Addition and Subtraction to 100

Re ga le du ca tio n

Remember this!

How many cubes in all?

Add by counting on.

9 + 5 = 14 There are 14 cubes in all.

10 Find 13 + 5. Add by making 10.

13 + 5

13 + 5 = 18

= 10 + 8 = 18

Re ga le du ca tio n

Find 5 less than 20 by counting back on a number line. 8

20 – 5 = 15

Subtract by taking away the ones and adding to a 10. There are 17 apples on a tree. Halle picks 6 apples. How many apples are left?

17 is 10 and 7.

17 – 6 = 11

7–6=1

7–6 = 1 10 + 1 = 11

17 7 – 6 = 11 There apples left. here a are 11 app

Re ga le du ca tio n

Subtract by getting 10 first. Find 15 – 7.

15 – 7 = 8 5

115 5 – 5 = 110 0 10 – 2 = 8 10

15 – 7 = 8

rst. st Subtract from 10 first. Find 13 – 6.

13 – 6 = 7

10 – 6 = 4 4+3=7

Have a go! mber. Use the number line to count on from the greaterr number. Complete the equation.

Re ga le du ca tio n

(a) 7 + 4 =

(b) 11 + 5 =

(d) 16 + 2 =

(e) 14 + 5 =

(f) 15 5+5=

Make a 10. Fill in the blanks.

(a) 9 + 7 =

(b) 8 + 9 =

12 13 14 15 16 6 17 18 19 20

Use the number mber line to count co back. Complete lete the equation. equa 6

12 13 14 15 16 17 18 19 20

( (a) 15 – 2 =

(b) 12 – 5 =

(d) 16 – 4 =

(e) 17 – 3 =

(f) 20 – 5 =

Subtract by taking away the ones and adding to the 10. Fill in the blanks and complete the equations.

Re ga le du ca tio n

(a)

(b)

18 – 6 =

19 – 6 =

–

Subtract by firstt subtracting subt su ing from fr 10. Fill in the blanks the equations. ks and complete com co (a)

(b) b)

Subtract by getting 10 first. Fill in the blanks and complete ete the equations. equatio equat 17 – 9 =

–

15 – 8 =

13 – 9 =

–

Addition Without Regrouping

al ed uc ati on

Anchor Task

Tens

Ones e

Let’s Learn

Re ga le du ca tio n

Find 45 + 4.

Count nt on 4 ones 45. nes from 45

48 8

49 49

43 45 46 47 48 49 50

45 + 4 = 49

Find 62 + 6.

es. Then, add the t tens. First add the ones. 62 + 6 = 68 8

Tens Ones

2+6= 8 6 0 + 8 = 68 68 60

62 + 6 = 68

You can c also add like this.

2 6 8

Re ga le du ca tio n

Find 33 + 24.

First, add the ones.

Add the ten tens.

Tens Ones

3 2

3 4 7

Tens ens Ones

3 2 5

3 4 7

33 + 24 = 57

Find 62 + 37. Add the ones. Tens Ones

6 3

2 7 9

Add the tens. ens. Tenss Ones es

6 3 9

2 7 9

62 + 37 = 99 9

Let’s Practice Fill in the missing numbers. Complete the equation.

Re ga le du ca tio n

(a)

23 3

73 3

93 9

21 + 3 =

(b)

43 + 4 =

(c)

75 + 2 =

(d)

91 + 5 =

(e) e)

60 6 0

62 + 4 =

Complete the equations. (a) 72 + 3 =

(b) 2 + 77 =

(c)

(d) 72 + 4 =

Re ga le du ca tio n

54 + 2 =

(e) 4 + 34 =

(f) 5 + 611 =

(g) 85 + 4 =

(h) 93 + 4 =

Add.

(a)

(c)

(e)

(g) g)

2 4

b) (b)

4 5

(d) (

3 1

6 2

7 2

6 3

2 5

3 4

(f)

(h)

Add. 2 4

(b)

3 1

4 3

(d)

4 3

4 4

6 1

2 4

3 2

1 1

5 2

6 2

6 3

5 3

2 5

8 1

3 4

Re ga le du ca tio n

(a)

(c)

(e)

(g)

(f)

(h)

Complete e the he equations. equatio (a) 23 3 + 13 3=

(b) 42 + 15 =

(d) 21 + 46 =

(e) 71 + 14 =

(f) 66 + 23 =

(g) 85 + 11 =

(h) 34 + 64 =

Fill in the blanks. Add.

Re ga le du ca tio n

(a) 18 + 31 =

(e) 63 + 36 =

(g) 44 4 + 45 =

(b) 45 + 14 =

(d) 13 + 8 85 =

(f) 24 + 53 =

(h) 26 + 62 =

Solve It!

du c

tio n

Riley and Halle wanted to make sure they have enough gh counters ounters for a game. They y have 23 blue counters and 25 green g en ones. nes.

Re ga

(a) Show the ways: h totall number b off counters nters in in two off these h • a drawing • using number bonds • using addition with a place ce e value chart char

(b) If the game ame e needs needs a total ttota of 45 counters, do they have enough counters? ters? Tell how you y know.

At Home Complete the equations.

Re ga le du ca tio n

(a) 23 + 13 =

(b) 42 + 15 =

(c)

(d) 21 + 46 =

35 + 34 =

(e) 12 + 72 =

(f) 64 + 24 =

Fill in the blanks. Add. (a) 18 + 31 =

(e) e)) 62 2 + 36 =

(b) 45 + 14 =

(d) 13 + 85 =

(f) 24 + 53 =

Addition With Regrouping

Re ga le du ca tio n

Let’s Learn

Add 45 and 7. Tens

Tens ens ns Ones

Ones

5 7

First, add the on ones.

5 ones + 7 ones = 12 ones. Regroup oup the ones. 12 ones = 1 ten 2 ones Tens

Tens Ones

Ones

5 7 2

Tens

Tens Ones

Ones O

5 7

Add the e tens. te 4 tens + 1 ten = 5 tens 45 + 7 = 52

Add 16 and 28. Tens Oness

Ones

1 2

6 8

Re ga le du ca tio n

Tens

6 ones + 8 ones = 14 ones. Regroup the ones. es. 14 ones = 1 ten 4 ones Tens

Tens ens O Ones

Ones

1 2

6 8 4

Tens

Tens Ones

Ones

1 2

6 8

Add the tens. s. 1 tens + 2 tens + 1 ten = 4 tens 16 + 28 = 44

Let’s Practice Fill in the blanks.

Re ga le du ca tio n

(a) Find 17 + 4.

Add the ones.

ones +

ones nes =

Regroup the ones.

Add the tens.

ones =

ten +

ones

ten te

ten =

one

tens

17 + 4 =

(b) Find 66 + 6.

Add dd the he ones.

ones. Regroup egroup the o on tens. Add th the ten

66 + 6 =

ones +

ones =

ones

ten

ones

ones =

tens +

ten =

tens

Fill in the blanks. Add.

Re ga le du ca tio n

(a) 18 + 3 =

(e) 6 + 44 =

8+9= (g) 68

(b) 17 + 9 =

(d) 34 + 9 =

(f) 7 + 75 =

(h) 88 + 8 =

Fill in the blanks.

Re ga le du ca tio n

(a) Find 45 + 18.

Add the ones.

Regroup the ones.

Add the tens.

ones +

ones es =

ones =

tens +

ones

ten en

ten =

ones

tens

45 + 18 =

(b) Find 28 + 56.

Add the ones.

Regroup up the ones. one Add dd the tens. te

28 + 56 =

ones +

ones =

ones

ten

ones

ones =

tens +

ten =

tens

Fill in the blanks. Add.

Re ga le du ca tio n

(a) 12 + 18 =

(e) 38 + 38 =

(g) 66 6 + 17 =

(b) 24 + 19 =

(d) 54 + 2 27 =

(f) 15 + 55 =

(h) 47 + 47 =

At Home Add.

Re ga le du ca tio n

(a)

(c)

(b)

4 7

(d)

6 7

6 9

Fill in the blanks. Add using columns. (a) 32 + 8 =

5 5

(b) ( 43 + 8 =

(d) 49 + 9 =

Add. 5 6

(b)

1 1

9 9

(d)

5 2

2 1

8 7

3 1

6 4

Re ga le du ca tio n

(a)

(c)

Fill in the blanks. Add using columns. (a) 26 + 36 =

(b) 28 2 + 18 =

(d) 75 + 15 =

Hands On

ca tio n

Materials • One set of problem cards per pair of partnered students udents ts • Place value chart • Counters or Rekenrek

Re g

Instructions One partner takes a card and reads the problem. roblem. lem. The other partner models the problem using g the counters count cou and place value chart or Rekenrek. Work ork together ogether to find the answer.

Finally, ally, complete the equation. (a) a) 24 + 15 =

(b) 34 + 15 =

(d) 28 + 15 5=

(e) 28 + 25 =

(f) 17 + 48 =

Solve It!

ca tio n

Sophie bakes 3 types of cookies for her party. She bakes 24 pistachio cookies, 38 chocolate chip cookies, ookies, es, and an 18 sugar cookies.

Her sister eats 6 cookies before the party starts. s. How many cookies does Sophie have for herr party when iti starts? Show how you know with a drawing along with computations. th computa

Adding Multiple Two-digit Numbers ers

Re ga le du ca tio n

Let’s Learn

Let’s find 23 + 16 + 45.

Tens Ones

2 1 4

First, align the ones and tens.

Add the ones. Remember to regroup the ones.

3 6 5

Tens Te Ones nes

Finally, add F the tens.

2 1 4

3 6 5 4

Tens Ones

3 6 5 4

2 1 4 8

23 + 16 + 45 = 84

Find 36 + 22 + 28 + 13. 3. Tens Ones

3 2 2 1

6 2 8 3

36 + 22 + 28 8 + 13 = 99 84

Tens T Te Ones

Tens Ones

3 2 2 1

6 2 8 3 9

3 2 2 1 9

6 2 8 3 9

Let’s Practice Add.

Re ga le du ca tio n

(a)

1 5 6

(b)

1 2 4

3 8 2

(d)

2 4 2

1 9 0

(f)

6 1 1

3 2 9

(h)

3 2 3

2 1 8

(j)

1 6 1

(c)

(e)

(g)

(i)

3 1 3

9 2 3

2 5 1

7 5 2

2 3 2

7 4 8

5 1 2

6 9 2

2 2 3

1 7 8

Add. (a)

(b)

1 2 7 6

3 2 2 1

5 2 2 8

1 0 8 8

(f (f)

2 1 4 1

2 1 8 3

(h)

3 1 2 1

5 6 5 2

(j)

4 2 1 1

2 3 1 2

5 4 7 1

3 1 2 2

1 3 9 5

1 1 2 3

7 8 3 1

3 2 1 1

4 6 0 7

1 1 2 2

2 3 9 2

Re ga le du ca tio n +

1 2 4 1

(c)

(e)

(g)

(i)i)

(d)

At Home Fill in the blanks. Add using columns.

Re ga le du ca tio n

(a) 16 + 36 + 45 =

(e) 50 0 + 15 5 + 18 =

(b) 35 + 27 + 20 0=

(d) 14 + 25 + 38 =

(f) 43 + 29 + 22 =

Fill in the blanks. Add using columns.

Re ga le du ca tio n

(a) 11 + 16 + 25 + 20 =

(e) 16 + 16 6 + 13 + 25 =

(b) 31 + 27 + 13 + 11 =

(d)) 12 + 39 3 + 21 + 15 =

(f) 26 + 17 + 21 + 22 =

Solve It!

ati on

Blake stored his books on three shelves. The top shelf had 19 books. elf. The middle shelf had 12 more books than the top shelf. ddle shelf. s The bottom shelf had 5 more books than the middle Find out how many books were on each shelf and how many man books he had altogether.

1-Step Addition Word Problems

ion

Let’s Learn

Re ga le du

A baker makes 42 chicken pies and 37 pumpkin pies. How many pies does the baker bake altogether? r??

chicken pies

pumpkin pumpki pies

Add 42 and 37 to find the total.l.

4 2 + 3 7 7 9

42 + 37 = 79 The baker ker bakes bak 79 pies altogether.

Keira and Riley go shopping. Keira has $56. Riley has $15 more than Keira. How much money does Riley have? $15

ed uc ati o

$56

Keira’s money

Riley’s money

56 + 15 = 71 Riley has $71.

6 1 5

Re g

Halle and Sophie visit the zoo. Halle takes 68 photographs. phs. Sophie takes 27 photographs. S How many photographs do Halle and Sophie take in total?

Halle’s photos H

Sophie’s photos ?

8 + 2 7 9 5

68 + 27 = 9 95 Halle and Sophie take 95 photos in total. 91

Let’s Practice Fill in the blanks to complete the word problems.

Re ga le du ca

(a) Ethan borrows 12 books from the school library on Monday. He borrows another 6 books on Tuesday. How many books did he borrow in total?

Monday

Tuesda Tuesday

Ethan borrowed we

books in total. boo

(b) A green grocer cer sells 28 2 green apples and 29 red apples. How many any y apples does do he sell in all?

green apples

red apples

The he green grocer sells

apples in all.

Re ga le du ca tio n

Adult

Child

The total price for 1 adultlt and 1 c ch child is

Use the space provided ded d to complete comple the word problems. s (a) Dominic has 24 coins. 2 coins. coin Blake has 32 How many have in all? ny coins do they the t

Dominic om and Blake have

coins in all.

le du ca tio n

(b) There are 33 seagulls on the beach. Another 27 seagulls fly in to join them. How many seagulls are on the beach now?

There are

seagulls ulls ls on the beach bea now.

Re g

ashells hells in his collection. c (c) Wyatt has 67 seashells ach, he collects co c On a trip to the beach, another 14 shells. How many shells she does shell es Wyatt Wy have?

Wyatt W has

shells.

Solve It!

ati on

Make a bar model. Then use counting cubes or a Rekenrek enrek ek to solve. Show your work with a drawing.

0-egg cartons carton Riley’s chickens laid enough eggs to fill up two 10-egg on Friday. The next day they laid enough eggs to fill up one gs did they llay carton and half of another one. How many eggs on the two days.

Solve It!

ion

Halle cared for 18 kittens on her first day at the animall shelter. elter. In h time. me. How Ho the next two days, she cared for 5 more kittens each many kittens did she care for over the three days??

At Home Fill in the blanks to complete the word problems.

Re ga le du ca tio n

(a) Riley picked flowers in her garden. She picked 25 daisies and 8 roses. How many y flowers did she pick p in total? l?

daisies

roses rose

Riley picked

flowers owers in total.

(b) Michelle walks ks 18 steps ste to the garden. She then n walks another anoth 36 steps to the pond. How many ny steps did di she sh walk in total? ?

to garden

to pond

Michelle ch walks

steps in total.

Re ga le du ca tio n

coffee

tea

The coffee shop sold

hot drinks drin in total.

Use the space provided ed to complete the word problems. ht some ome chairs chai cha for his office. (a) Mr. Olsen bought k chairs and 28 blue chairs. He ordered 25 black How many y chairs did d he buy in all?

Mr. M Olsen O bought

chairs in all.

They carried

ed uc ati on

(b) Jordan helps his father carry boxes to the car. 6 boxes. boxe oxe Jordan carries 14 boxes and his father carries 26 How many boxes did they carry in all?

boxes xes es in all.

Re g

mburger ger resta (c) Super Dooper Hamburger restaurant sold 24 d 67 spicy burgers. b cheeseburgers and How many hamburgers burgers rgers did they sell in all?

The restaurant rest sold

hamburgers in all.

Subtraction Without Regrouping

Re ga le du ca tio n

Let’s Learn

Find 38 – 6.

Let’s count back and cross out the ones. 8 ones – 6 ones = 2 ones. Tens

Tens Ones

Ones

–

8 6 2

Subtract the tens. Tens

Tens Ones

Ones

8 6

–

There are no tens to o subtract. subt sub 3 tens – 0 tens = 3 tens. 38 – 6 = 32 We can subtract btract the ones mentally. entally.

100

8–6=2 38 – 6 = 32

Subtract 34 from 57.

Re ga le du ca tio n

Subtract the ones. 7 ones – 4 ones = 3 ones. Tens

Ones

Tens ens Ones

–

5 3

7 4

Subtract the tens. Tens

Ones

Tens Ones

–

5 3

7 4

5 tens – 3 tens = 2 tens. ns. 57 – 34 = 23 Subtract thee ones and tens mentally.

1 01

Let’s Practice Cross out blocks to subtract. Fill in the blanks.

Re ga le du ca tio n

(a) Find 29 – 6.

Subtract the ones. ones –

ones =

ones

Subtract the tens.

tens – 0 tens =

tens ens

29 – 6 =

(b) Find 63 – 22.

ones. Subtract act the ones one ones – one

ones =

ones

Subtra th Subtract the tens. tens te –

63 – 22 =

1 02

tens =

tens

Subtract. (a)

8 7

(b)

9 5

(d)

–

3 1

7 6

–

7 5

4 3

Re ga le du ca tio n

–

(c)

8 4

–

Fill in the blanks. Subtract using columns. (a) 55 – 14 =

–

(b) ( 78 – 21 =

–

(d) 96 – 92 =

–

1 03

Hands On

Re ga le du ca tio n

Start with 48 cubes. Now take away 20.

Now take away 3 more.

How many do you have left?

Write a subtraction sentence showing what at you did.

Model 67 - 33 with chips on n the place value va chart. Tens

Ones

Then n write your ssteps and the final equation.

104

Solve It!

eg a

Step 1

ed uc ati on

Blake has 47 toy trucks, and Ethan has 35 toy trucks. Together ether they give away 52 toy trucks. How many toy trucks are they hey left with together?

Step 2

1 05

At Home Subtract.

Re ga le du ca tio n

(a)

–

(c)

–

3 1

(b)

7 1

(d)

–

2 1

4 3

–

6 2

8 2

Fill in the blanks. Subtract vertically.

(a) 52 – 21 =

–

106

6 5

(b) 66 – 44 =

–

(d) 65 – 53 =

–

Fill in the blanks. Subtract vertically.

Re ga le du ca tio n

(a) 76 – 16 =

–

(e) 66 – 34 4=

–

(b) 78 – 45 =

–

(d) 94 – 92 =

–

(f) 88 – 17 =

–

1 07

Subtraction With Regrouping

Re ga le du ca tio n

Let’s Learn

Find 34 – 8. Tens

Tens ens ns Ones

Ones

–

4 8

There are not enough ones to subtract!

We cannot subtract 8 ones es from om 4 ones. ones one Regroup 1 ten into 10 ones. es. Tens

Tens Ones

Oness

–

14 4

We now have ave 14 ones. es = 6 ones. one 14 ones – 8 ones Tenss

Tens Ones

Ones O

–

There are to subtract. are no tens t 34 – 8 = 26

108

14 4

Subtract 25 from 62. Ones

Re ga le du ca tio n

Tens

Tenss Ones ne

6 2

–

2 5

We cannot subtract 5 ones from 2 ones. es. Regroup 1 ten into 10 ones. Tens

Ones

Tens Ones

–

6 2

12 2

5 7

12 ones – 5 ones = 7 ones. nes. Subtract the tens. s. Tens

Ones On

Tens Ones

–

6 2

12 2

5 tens ens – 2 tens = 3 tens. 62 – 25 5 = 37 3

1 09

Let’s Practice Cross out the blocks and fill in the blanks.

Re ga le du ca tio n

(a) Find 22 – 8.

Regroup 1 ten into 10 ones. ones – ten –

ones =

tens =

ones one

ten

22 – 8 =

(b) Find 34 – 15.

group up 1 ten into 10 ones. Regroup ones –

ones =

tens –

ten =

34 – 15 =

110

ones

ten

Subtract. (a)

4 6

(b)

2 9

(d)

–

3 1

3 4

–

6 2

5 8

Re ga le du ca tio n

–

(c)

–

4 1

Fill in the blanks. Subtract vertically.

(a) 72 – 24 =

–

(b) 55 – 17 =

–

(d) 92 – 46 =

–

111

At Home Cross out the blocks and fill in the blanks.

Re ga le du ca tio n

(a) Find 33 – 17.

Regroup 1 ten into 10 ones. ones –

ones =

tens –

ten =

ones

t ten

33 – 17 =

(b) Find 45 – 28.

Regroup group up 1 ten into 10 ones. ones –

ones =

tens –

tens =

45 – 28 =

112

ones

ten

Fill in the blanks. Subtract vertically.

Re ga le du ca tio n

(a) 71 – 15 =

–

(e) 82 – 28 8=

–

(b) 64 – 46 =

–

(d) 90 – 54 =

–

(f) 41 – 14 =

–

1 13

1-Step Subtraction Word Problems ms

Re ga le du ca tio n

Let’s Learn

Keira scored 93 points on her spelling test. Michelle scored 12 points less than Keira. How many points did Michelle score on her spelling test? 93

Keira’s spelling score

Michelle’s spelling score

fewer points ffe

Subtract the difference to find Michelle’s scor score.

9 3 – 1 2 8

93 – 12 = 811 Michelle elle scored cored 81 points poin on the spelling test.

114

Re ga le du ca

Mr. McDonald has 85 animals on his farm. There are 48 sheep. The rest of the animals are cows. How many cows are on Mr. McDonald’s farm?

sheep

cows co

Regroup 1 ten into 10 ones es before you subtract.

8 15 5 – 4 8 3 7

85 – 48 = 37 There are re 37 cows on Mr. M McDonald’s farm.

1 15

Let’s Practice Fill in the blanks to complete the word problems.

ed uc ati on

(a) There are 76 children in the playground. 33 children are boys. How many girls are in the playground?? ?

boys

girls

–

– There are

girls rls in the playground. playg

(b) A fisherman takes kes 60 crabs crab to t the market. He sells 46 crabs. a How many crabs crab does d s he have left?

Re ga

remaining aining

–

The fisherman fish has

116

sold

crabs left.

Re ga le du ca tio n

Cost of Halle’s shoes

Cost of Riley’s shoes

–

Riley’s shoes cost $

ed to complete the word problem. Use the space provided

urant nt sells 82 8 bowls of ice cream, On Sunday, a restaurant res rant ant sel On Monday, the restaurant sells 16 fewer bowls of ice cream. How many bowls wls ls of ice i cream a were sold on Monday?

bowls bo of ice cream were sold on Monday.

1 17

At Home Fill in the blanks to complete the word problems.

Re ga le du ca tio n

(a) A baker bakes 92 donuts. She sells 55 donuts. How many donuts does she have left? ?

donuts sold

donuts left ft

–

There are

donuts nuts left. le

(b) On Saturday, 74 4 customers stomers visit v a clothing store. On Sunday, 26 fewer visit the store. er customers custo How many customers visit custo custom vis the store on Sunday?

Customers on Saturday Custome

Customers on Sunday

–

On n Sunday, S

118

customers visited the clothing store.

Use the space provided to complete the word problems. (a) There are 41 passengers on a bus. At the next stop, 9 passengers get off. s? How many passengers are left on the bus?

Re ga le du ca tio n

passengers are left eft on the bus.

(b) Sophie scores 86 her Science test. 6 points oints on h fe r points on her English test. She scores 177 fewer How many y points did d she he score on her English test?

Sophie oph scored

points on her English test.

1 19

Solve It!

aturday or At the lemonade stand, the class raised $34 on Sat Saturday turday day for fo earthquake victims. On Sunday, they raised $48.

Re ga

(a) How much more did they ey raise on Sunday than on Saturday?

(b) How ow much did they raise over the entire weekend?

120

Dominic and Wyatt had a tag sale. Dominic made $39 on his items. Wyatt made $53. They both agree that Wyatt tt made mad more.

Re ga le du ca tio n

Dominic said Wyatt made than him because he did e $26 more tha the subtraction like this.

$53 53 – $39 $26

Wyatt said he made ade $14 $ more because 39 + 1 = 40, and 40 + 13 = 53, so add the partial addends to make $14. part p

$39

+13

$40 $53 1 + 13 = 14

Who iss correct? error did the other one make? correct? What W Show Show your thinking. thinkin th

121

2-Step Word Problems

ati on

Let’s Learn

Blake has 12 toy cars. Dominic has 3 more toy carss than an Blake. How many toy cars do they have altogether?

Re ga le du

First, let’s t’s find how have manyy cars I have.

Step 1

Blake’s cars

Dominic’s cars ars ?

To find the number ber of cars that th Dominic has, we add. 12 + 3 = 15 Dominic has 15 toy oy cars. Now we can number of toy cars. an find nd the total tota nu

Step 2

Blake’s cars c

Dominic’s cars

12 + 15 = 27 2 Blake and Dominic have 27 toy cars altogether.

122

Re ga le du ca tio n

In January, Jordan saves $36. In February, he saves $15 more than in January. How much money did he save in total?

Step 1 Find the amount of money Jordan n saves ves in February. Febr Feb $36

5 $15

January

February y

6 1 5

5 1

36 + 15 = 51 Jordan saves $51 in February. February

Step 2 Add the amounts mounts nts together togethe to find the total. $36

$51

January anuary

February

3 6 + 5 1 8 7

36 + 51 = 87 8 Jordan saved $87 in total.

123

Re ga le du ca tio n

Halle has 53 stickers. Sophie has 12 fewer stickers than Halle. How many stickers do they have combined?

Step 1 Subtract to find Sophie’s stickerr amount. amoun 53

Halle’s stickers rs

rs Sophie’s stickers

fewer

5 3 – 1 2 4

53 – 12 = 41 Sophie has 41 stickers. ers. We can add to find the combined number of stickers. comb co Step 2

Halle’s sstickers

Sophie’s stickers

5 3 + 4 1 9 4

53 + 41 = 94 9 Halle and Sophie have 94 stickers combined.

1 24

tio n

In the morning, a florist sells 45 roses. She sells 16 fewer roses in the afternoon. Find the total number of roses sold in the day.

Re ga le du

Find the number of roses sold in the afternoon.

Step 1

Roses sold in the morning

Roses sold in the afternoon oon

fewer sold

4 15 5 – 1 6 3

2 9

45 – 16 = 29 29 roses were sold in the afternoon. aft afterno Now we can add d to find the th total to number of roses sold in the day.

Step 2

Morning

Afternoon

4 5 + 2 9 7 4

45 + 29 = 74 7 The florist sold 74 roses in the day.

125

Let’s Practice Fill in the blanks to complete the word problems.

Re ga le du ca tio n

(a) There are 38 visitors to the museum on Saturday. aturday. rday. There are 17 more visitors on Sunday. How many people visited the museum m on the weekend? weeke Step 1 Find the number of visitors on Sunday. unday. ay.

Saturday

Sunday

On Sunday,

people ople visited the museum.

Step 2 Add the for both days. he number umber of visitors visit

Saturday

Sunday

people visited the museum on the weekend.

1 26

Re ga le du ca tio n

(b) There are 33 ducks swimming on the lake. There are 15 fewer geese than ducks. e lake. Find the total number of ducks and geese on the Step 1 Find the number of geese on the lake.

ducks

geese

fewerr

–

There are

geese eese se on the lake. l

Step 2 Add to find the of ducks and geese. e total number num nu

ducks cks

geese

There are

ducks and geese on the lake. 127

Use the space provided to complete the word problems.

Step 1

Re g

Step 2

There T are a

1 28

ed uc ati on

(a) In a treasure chest there are 32 silver coins. ns. There are 8 more gold coins than silver coins. oins. s. Find the total number of silver and gold coins.

silver and gold coins.

Step 1

Re g

Step 2

There are a

ed uc ati on

(b) On a farm there are 60 goats. There are 43 fewer sheep than goats. Find the total number of goats and sheep on the farm.

goats and sheep on the farm.

129

ed uc ati on

Solve It!

The second graders went to an amusement usement p park. When they got o to the teacup teacu ride first. The other there, 24 students wanted to go e Ferris whe 36 students wanted to go to the wheel first.

Re ga

(a) How many students went park? nt to the amusement am

(b) How students wanted to go to the Ferris wheel w many any more stud stu than ride? an the he teacup ride

130

Hands On

Re ga le du ca tio n

Working with a partner and your number cards, draw w 2 cards ards em with the t each. Then one of you write an addition word problem ne. Give each numbers and the other one writes a subtraction one. other the problems, and solve them.

Do it again after drawing new cards, but switch roles with ain aft the operations.

1 31

At Home Fill in the blanks to complete the word problem.

Re ga le du ca tio n

(a) At a restaurant, 18 people are sitting inside. 14 more people are sitting outside. How many people are at the restaurant? nt? Step 1 Find the number of people sitting g outside. tside.

people inside

people outside de

There are e

people ple sitting outside.

Step 2 Add people sitting inside and outside. d the e number of p

people ople inside

people outside

There Th are

132

people at the restaurant.

ed uc ati on

(b) A bakery sold 57 cookies. It sold 28 fewer cupcakes than cookies. n total? tal? How many cookies and cupcakes were sold in Step 1 Find the number of cupcakes sold.

? cupcakes

fewer er

–

cupcakes es were sold. sold

Re ga

Step 2 Add the and cupcakes sold. e number umber of cookies c

cupcakes pcakes

cookies ?

cookies and cupcakes were sold in total. 1 33

Use the space provided to complete the word problems.

Step 1

Re g

Step 2

ed uc ati on

(a) A juice shop sold 45 bottles of orange juice. It sold 16 fewer bottles of apple juice. How many bottles of juice were sold in all??

bottles of juice were sold in all. bo

1 34

Step 1

Re g

Step 2

Halle saved save $

du ca tio n

(b) In March, Halle saved $44. She saved $8 more in April. ril? How much money did Halle save in March and April?

in March and April.

1 35

Looking Back Fill in the blanks. Add.

Re ga le du ca tio n

(a)

(c)

5 1

1 7

(b)

8 5

(d)

2 1

4 3

3 4

6 4

(e) 67 + 9 =

(f) 18 + 27 =

(g) 33 + 48 =

(h) 5 + 6 + 7 =

1 36

Fill in the blanks. Subtract. (a)

9 6

(b)

2 5

(d)

–

4 1

7 7

–

4 3

1 5

Re ga le du ca tio n

–

(c)

5 2

–

(e) 74 – 38 =

–

(f) 38 – 19 =

–

(g) 82 – 48 =

–

(h) 95 – 67 =

–

1 37

Fill in the blanks to complete the word problems.

Re ga le du ca tio n

ket. (a) Mrs. Lombard takes 85 candles to sell at the market. She sells 38 candles. How many candles does she have left?

candles sold

candles left ft ?

–

She has

candles les left. eft

(b) Halle and Sophie cookies for the school fair. e make cooki coo Halle bakes 33 cookies okies kies and Sophie bakes 18 cookies. How many cookies do coo cooki o they the bake in all?

cookies Halle’s co

Sophie’s cookies

Halle Ha and Sophie bake

1 38

cookies in all.

Re ga le du ca tio n

(c) On a farm there are 42 chickens in the yard. There are 15 fewer chickens in the coop. How many chickens are there in all? Step 1 p. Find the number of chickens in the coop.

chickens in yard

fewer few

chickens in coop

–

There are

chickens ckens in tthe coop.

Step 2 Add to find of chickens. nd the total tota number n

chickens in y yard

chickens in coop

There er are

chickens in all.

1 39

Numbers to 1,000

Anchor Task

140

1 41

Hundreds, Tens and Ones

Re ga le du ca tio n

Let’s Learn

We can put 10

together to make one

10 ones nes makes 1 ten ten.

10 ones

How many

1 ten

altogether?

Tens One Ones 2

2 tens 4 ones = 24 20 + 4 = 24 We write: 24 We read: twenty-four How many

altogether??

Tens Ones 6

ns 8 ones = 68 6 tens 60 0 + 8 = 68 6 We write: 68 We read: sixty-eight read sixty-

142

Let’s put 10

Re ga le du ca tio n

together.

10 tens make 1 hundred. ndred.

10 tens

1 hundred

10 tens = 1 hundred We write: 100 We read: one hundred

Let’s put some hundredss together ogether and a an count. How many blocks are re there? t ?

100, 200, 300, 400.

We write: 400 hundred We read read: four h

1 43

altogether?

Re ga le du ca tio n

How many

500

60 0

5 hundreds 6 tens 5 ones = 565 500 + 60 + 5 = 565 We write: 565 We read: five hundred and d sixty-five xty-five Let’s put 10

together. er.

10 hu hundreds make 1 thousand.

We wr write: 1000 ead: one thousand We read:

1 44

Let’s Practice Write the number of sticks.

Re ga le du ca tio n

(a)

(b)

(c)

(d)

(e)

1 45

Match.

Re ga le du ca tio n

146

six hundred and twenty-one

523 52

one hundred and six

951

five hundred and twenty-three tw wenty-three nty-three nty thre

621

three hundred ndred and sixty-three sixt

106

nine hun hundred ndred and fifty-one

363

Write the number. (a)

Re ga le du ca tio

two hundred and twenty-nine

(b)

nine hundred and ninety-three ty-three thre

(c)

five hundred dred d and sixty-nine sixt sixty

(d)

five ve hundred hundre a and twenty-three

( (e)

three hundred and fifty-one th

1 47

Write the number in words.

Re ga le du ca tio n

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h) (

148

Write the number in numerals and words.

Re ga le du ca tio n

(a)

(b)

(c)

(d)

1 49

Fill in the blanks.

Re ga le du ca tio n

(a)

100 + 30 + 4 =

(b)

300 + 40 + 8 =

(c)

400 + 20 + 1 =

(d)

700 0 + 40 + 9 =

150

Re ga le du ca tio n

(e)

(f)

1 51

Hands On

Re ga le du ca tio n

Model these numbers.

(a) 42

(b) 321 (

(d) 907

152

Solve It!

Re ga le du ca tio n

Match the numbers in 2 ways.

Nine hundred dred and hree e forty-three

300 00 + 50 + 4

Three hundred and Th fifty-four f

300 + 40 + 2

900 + 40 + 3

Three hundred and forty-two

153

Match.

du ca tio n

At Home

five hundred and forty

four hundred and fifty

two hundred and twenty-six ty-six -six i

an thirty-six y-six i five hundred and

undred dred d d and d twenty-two twen t six hundred

two hundred and forty t h hund d

154

622 6 2

450

536

240

540

226

Write the number in numerals and words.

Re ga le du ca tio n

(a)

(b)

Write the number in words.

(a)

(b)

(c)

(d)

155

Fill in the blanks.

Re ga le du ca tio n

(a)

500 + 30 + 8 =

(b)

0+5= 600

(c)

156

Re ga le du ca tio n

(d)

(e)

157

Place Value to 1,000

Re ga le du ca tio n

Let’s Learn

How many buttons are there altogether? Hundreds

100

Tens

Ones O

110 0

10 0

110 0

100

0 7 0 8

8 ones or 8

7 tens or 70

4 hundreds or 400

400 + 70 0 + 8 = 478 There are 478 4 buttons altogether.

1 58

What number is shown in the place value chart? Tens

Ones

Re ga le du ca tio n

Hundreds

0 9 0 5

5 ones or 5

9 tens or 90

6 hundreds or 600

6 hundreds tens 5 ones = 695 undreds 9 te undre 600 + 90 + 5 = 695

159

Let’s Practice Fill in the blanks. Write the number in numerals and words.

Re ga le du ca tio n

(a)

Hundreds

Tens

hundreds

(b)

Tens

h hu hundreds u

160

ones

Hundreds nd

te tens

Ones On

tens

Ones

ones

(c)

Tens

Ones

Re ga le du ca tio n

Hundreds

hundreds

(d)

Tens

hundreds hu +

ones

Hundreds

tens

Ones

ones

1 61

Fill in the missing numbers.

267

(b)

506

(c)

ed uc ati o

(a)

200 +

+7=

+6=

400 4 00 + 40 + 9=

(d)

987 9 87

+ 80 +

790

+ 90 +

(e) (e

1 62

Write the value of the digit. (b)

Re ga le du ca tio n

(a)

(c)

(d)

(e)

(f)

(g)

(h)

(i))

(j)

1 63

Match.

0 6

8 5 9 8

0 8

0 4 9 8

0 2 9 8 2

0 4

6 3

0 2

01 9 8

0 0 9

9 5 8 5 9 8

0 5

Re ga le du ca tio n

1 64

0 9 9 8

Fill in the blanks. (a)

4 0 8

Re ga le du ca tio n

(b)

(c)

2 7 0

1 65

Fill in the blanks. (a)

ed uc ati on

The value of the digit igit 3 is

132

(b)

206 (c)

879

e digit 1 is The value of the

The value off the he digit 2 is

The digit 6 is e value ue of the d

The e value of tthe digit 0 is

The value of the digit 2 is

The value of the digit 8 is T

The value of the digit 9 is

The value of the digit 7 is

The value of the digit 0 is

(d)

The value of the digit 1 is

610 1 66

The value of the digit 6 is

. .

(e) is 90 900.

The value of the digit

is 2. 2

The value of the he e digit

is i 80.

The value digit alue e of the dig

is 0.

e value ue of the th digit The

is 90.

The e value of o the digit

is 400.

The value of the digit Th

is 10.

T The value of the digit

is 700.

The value of the digit

is 5.

The value of the digit

is 300.

The value of the digit

is 8.

The value of the digit

is 40.

Re ga le du ca tio n

The value of the digit

982

(f)

490

(g)

715

(h)

348

1 67

(i)

906 (k)

is in the hundreds undreds dreds place. plac

The digit

is in the e ones nes place.

The digit

is in n the tens place. plac

The digit

is in the ones place.

git The digit

is in tthe tens place.

e digit The

is in the hundreds place.

The Th he digit dig

is in the tens place.

he digit The

is in the ones place.

The digit Th The

is in the hundreds place.

The digit

is in the hundreds place.

The digit

is in the ones place.

The digit

is in the tens place.

ed uc ati on

672

(j)

The digit

194 94

(l)

837

168

Color the circles to show each number. Color a circle green to show 1. Color a circle red to show 10. Color a circle blue to show 100. (a)

ed uc ati on

285

Re g

(b)

729

1 69

ca tio n

(c)

four hundred and sixty-threee

(d)

Re ga le

seven hundred ndred and n nine

(e)

eeight eig igght h hun hundred and twenty-four

170

Hands On

Re ga le du ca tio n

Materials Place value cards Number disks (ones, tens, hundreds) Place value charts to 100 (unlabelled)

Activity ng the number num nu In partners, Partner A models a number using disks. p to the number. num Starting with the Hundreds, they countt up rds to model the t number. Partner B uses the Place Value cards o the page. Partner A writes the number in the blanks on oles. Then the partners switch roles. Numbers to model: a) 125 (a) b) 379 (b) c) 638 (c) d) 904 (d)

1 71

At Home Fill in the blanks. Write the number in numerals and words.

Re ga le du ca tio n

(a)

Hundreds

Tens

hundreds

(b)

Tens

hundreds

172

ones

Hundreds

tens ens

Ones On

tens

Ones

ones

Match.

7 6 4

0 8

7 4 6

0 5

0 4

3 8 4

0 6

2 9 2

0 0 9

4 6

0 6

9 5 2

Re ga le du ca tio n

1 73

Fill in the blanks.

3 5 9

Re ga le du ca tio n

(a)

(b)

5 0

174

6 2

(c)

Write the number. (a) The digit 6 is in the tens place. The digit 1 is in the ones place. The digit 8 is in the hundreds place.

Re ga le du ca tio

ds place. ce. (b) The digit 5 is in the hundreds e The digit 0 is in the ones place. The digit 2 is in the tens place.

(c) The digit 9 is in the ones place. o The digitt 7 iss in the tens te place. git 4 is in the hundreds hund h The digit place.

dig 8 is in the tens place. (d) The digit The digit 9 is in the hundreds place. The Th digit dig 3 is in the ones place.

1 75

Solve It!

Re ga le du ca tio n

Sophie and Jordan made their own place value chart.t. Our place value poster showss 3324.

Find the value of each sticker.

= = =

Find the values ues on each place pla p value chart. (a)

176

Re ga l

(c)

ca tio n

(b)

(d)

1 77

Comparing Numbers to 1,000

Re ga le du ca tio n

Let’s Learn

Compare 42 and 34.

This sign means greater than.

42 is greater than 34. 42 > 34

Compare 55 and 63.

55 is smaller maller tthan 63. mal 55 < 63

178

This sign m means ssmaller than.

Compare 627 and 569. Which number is smaller? Tens

Ones

eg al ed uc ati on

Hundreds

6 2 7

First, compare thee hundreds.

5 6 9

5 hundreds is smaller maller ler than 6 hundreds. hun So, 569 69 is smaller than han 627.

569 < 627

1 79

Compare 446 and 478. Which number is greater? Tens

Ones

Re ga le du ca tio n

Hundreds

The hundreds are the same.

Compare mpare the values in the tens place.

4 4 6 4 7 8

7 ttens is greater than 4 ones.

So, 478 is greater than 446.

478 > 446

180

Compare 629 and 626. Which number is greater? Tens

Ones

Re ga le du ca tio n

Hundreds

The hundreds and tens are the same.

C Com Compare the values in the ones place.

6 2 9

6 2 6

9 ones is greater than 6 ones. So, 629 is greater than 626.

629 > 626

1 81

Re ga le du ca tio n

Compare 418, 246 and 273. Which is the greatest? Which is the smallest? Hundreds

Tens

Ones

4 hundreds is greaterr than t 2 hundreds. hundr So, 418 is the greatest. est. st.

Let’s arrange numbers from the range ge the numbe greatest smallest. est to o the smalles

greatest est

182

First, compare the hundreds.

Compare the tens ens in 246 and 273. 27 4 tens is smaller ler than an 7 tens. tens So, 246 is the e smallest mallest number. numbe num

smallest

Let’s Practice Tick the set that shows the greater number.

Re ga le du ca tio n

(a)

(b)

(c)

(d)

1 83

How many buttons are there? Which is the greater number?

Re ga le du ca tio n

(a)

100

110 0

100

The greater number is

(b)

100

1100 00

100

1100 10 00

100 0

1100 00

100

1100 00

100

The number is Th greater g

184

How many cubes are there? Which is the smaller number?

Re ga le du ca tio n

(a)

The smaller number is

number is The smaller sma

(b)

1 85

Circle the greater number.

Re ga le du ca tio n

(a)

(b)

(c)

(d)

Circle the smaller number. mber. er. (a)

(b)

(c))

(d)

186

Use the word ‘greater’ or ‘smaller’ to complete the sentences. than 102.

Re ga le du ca tio n

(a) 120 is (b) 604 is

than 601.

than 939..

than 770. 0.

(d) 713 is

(e) 645 is

than n 644. 6

(f) 892 is

than 889 889.

Use > or < to fill in the blanks. anks. s. (a) 450

550

(b) 604

640

640 0

(d) 802

820

(e) 761

768

(f) 151

(g) 998

899

(h) 627

276

(i)

2877

279

(j)

333

0 (k) 710

829

(l)

509

951

515

1 87

Which is the greatest? Which number is the smallest?

Re ga le du ca tio n

(a)

Hundreds

Tens

Ones

is the greatest.

(b)

is the smallest. sm

Hundreds

Tens

Ones On

is the e greatest greatest. greate

(c)

Hundreds reds

Tens T

Ones

is the greatest.

188

is the smallest.

Circle the greatest number.

Re ga le du ca tio n

(a)

(b)

(c)

(d)

10. Circle the smallest number. umber. ber. (a)

(b)

(c))

(d)

1 89

11.

Arrange the numbers in order from the greatest to the smallest.

Re ga le du ca tio n

(a)

234

greatest

(b)

671

greatest

432

125

smallest

716

677

smallest mallest est

12. Arrange the numbers ers in n order fro from the smallest to the greatest. (a)

767

smallest allestt

777

670

g greatest

(b)

480

smallest sm smalles

190

484

greatest

508

At Home Tick the set that shows the greater number.

Re ga le du ca tio n

(a)

(b)

(c)

1 91

How many buttons are there? Fill in the blanks.

Re ga le du ca tio n

(a)

100

The greater number is

10 10

(b)

100

110 0

10 0

1100 00

110 0

10 10

The number is Th smaller sm

192

Use the word ‘greater’ or ‘smaller’ to complete the sentences. (a) 80 is

than 100.

(b) 67 is

than 49.

Re ga le du ca tio n

than 139.

(d) 222 is

than n 202. 2.

(e) 775 is

than n 879. 8

(f) 946 is

than 941 941.

s. Use > or < to fill in the blanks. (a) 102

(b) 221

237

780 0

(d) 610

650

(e) 861

468 8

(f) 110

111

(g) 474

747

(h) 538

629

3 203

205

(j)

355

299

(k) 799 9

800

(l)

647

640

(i)

1 93

Circle the greatest number.

Re ga le du ca tio n

(a)

(b)

(c)

(d)

Circle the smallest number. umber. ber. (a)

(b)

c) (c)

(d) d)

1 94

Arrange the numbers in order from the greatest to the smallest. (a)

378

Re ga le du ca tio n

376

greatest

309

smallest

(b)

580

greatest

485

558

smallest allest

Arrange the numbers in n order der from tthe smallest to the greatest. (a)

176

smallest st

112

grea greatest

(b)

400

smallest

387

510

greatest

1 95

Solve It!

Re ga le du ca tio n

Cross out the numbers that do not match the clues. Find each child’s number. (a)

Sophie’s clues: • between 300 and 800 • less than 710 • more than 603

Sophie’s number is

(b)

Halle’s clues: • between 110 and 670 • more than 425 • less than 640

Halle’s number iss

(c)

Keira’ss cclues: lues: tween 4 20 an aand nd 8 40 • between 420 840 ore tthan h an 5 50 •m more 550 • lless ess tthan han 7790 90

Keira’s number is K eira’s numb eir

196

Wyatt’s clues: • between 525 and 905 • less than 750 • more than 700

Re ga le du ca tio

(d)

Wyatt’s number is

(e)

Ethan’s clues: • between 680 and 1,000 • more than 830 • less than 899

Ethan’s number is

(f)

Jordan’s clues: uees: • between 980 n 7700 00 aand nd 9 80 • more tthan 900 h an 9 00 • less than than 970 970

Jordan’s Jo ordan’s num number is

1 97

Odd and Even Numbers

Re ga le du ca tio n

Let’s Learn

Count the cubes in each set. 2

Notice that the cubes d evenly. can be paired

110 0

2, 4, 6, 8 and 10 are even numbers. mbers.

Count the cubes in each ea set. 1

In each set, there is 1 cube that cannot be paired evenly.

1, 3, 5, 7 and 9 are odd numbers. 1 98

Re ga le du ca tio n

Is 24 an odd or an even number?

All of the cubes cu can be paired evenly.

mber. So, 24 is an even number.

er? r? Is 19 an odd or an even number?

One cube cannot be paired.

So, 19 9 is an odd number. numb nu ber. b

1 99

eg al ed uc at

Numbers that end in 0, 2, 4, 6 or 8 are even numbers.

20 0

9 19

27 2

6 36

56 5

64 4

65 6

92 2

94 9

99 100

eg al ed uc at

Numbers that end in 1, 3, 5, 7 or 9 are odd numbers.

10 0

8 18

9 19

27 7

57 5

64 4

65 6

74 7

85 8

92 2

99 100

2 01

Let’s Practice Circle pairs of buttons. Circle odd or even.

Re ga le du ca tio n

odd dd

odd

even

odd dd

odd

eve even ven n

even

odd

20 2

even

odd

even

Write ‘odd’ or ‘even’. (b)

(c)

Re ga le du ca tio n

(a)

(d))

(e) e)

(f)

2 03

Write the number and circle odd or even.

Re ga le du ca tio n

odd

even eve

odd

even

odd

even

odd

even

odd

even

20 4

Re ga le du ca tio n odd d

even ev

odd

even

odd

even

odd

even

odd

even

2 05

Circle the odd numbers. 2

11 1

Re ga le du ca tio n

Circle the even numbers. 4

Write 4 even numbers between m mb etwee 20 and 40. ,

Write 4 odd d numbers between be 50 and 70. ,

206

Color even numbers to find a path down the cliff.

Re ga le du ca tio

45 5

51 5

6 16

29 2

41 4

100

2 07

Color the balloons with even numbers red. Color the balloons with odd numbers blue.

tio n

655

324

Re ga le du ca

103

561

789

2 902

208

350

du ca tio n

742

292

121

766

Re ga l

317

999

674

2 09

At Home Write the number and circle odd or even.

Re ga le du ca tio n

odd

even

odd

even

odd

even

odd

even

odd

even

210

Color the odd numbers blue. Color the even numbers yellow.

Re ga le du ca tio n

34 8 70 25

61 43 3 90

Write 4 even 60 and 80. n numbers umbers between betw be ,

7 2 16 6 52

Write ite 4 odd number numbe numbers between 80 and 100. ,

211

Solve It! Draw lines to deliver the letters to the correct mailboxes. boxes. es. The first one has been done for you.

Re ga le du ca tio n

• odd number • greater than 400 • digit in tens place is larger than digit in ones place

• odd number • smaller than 360 • sum of all of the digits is 6

e • 2 digits are the sam • 1 digit is even o digits is 5 • sum of the first tw

233

212

434

785

Re ga le du ca tio n

mber • even nu than 400 • greater ss lace is 1 le p s n e t in • digit ce in ones pla it ig d n a h t

• smaller ler tthan han 4 400 00 ery d iiggit iiss oodd dd • every digit

• 2 digits are the sa me • even number

359

321

778

213

Color the numbers the animals take to cross the pond. pond. Use a different color for each animal. ng on on 6 (a) The squirrel crosses the pond by stepping even numbers. y stepping stepping on o 6 (b) The hedgehog crosses the pond by odd numbers.

he hedgehog squirrel

Re ga le

21 4

20 17

(c) The rabbit crosses the pond by stepping on 5 even numbers. n (d) The monkey crosses the pond by stepping on 4 odd numbers.

rabbit

232

ga le d

m o on monkey

186

715

653

708 70

158

543

222

337

458

769

250 600

835

431 43

215

Skip Counting and Number Patterns ern

Re ga le du ca tio n

Let’s Learn

Let’s count in 2s. What number comes next?

10 0

In each step we add 2. 12 + 2 = 14. The next number is 14.

Try starting at 1 and skip counting in 2s.

Start at 16. Skip count in 2s to 30. 0 16, 18, 20, 22, 24, 26, 28, 30 Start at 31. Skip count in 2s to 45. 31, 33, 35, 37, 39, 41, 43, 45 5

The numbers in the show w e blue boxes bo b skip counting in 2s from 2 to 50. 5 1

33 3

42 2

21 6

Re ga le du ca tio n

Let’s count in 5s. What number comes next?

In each step we add 5. 25 + 5 = 30. The next number is 30!

Start at 35. Skip count in 5s to o 70. 0. 0 35, 40, 45, 50, 55, 60, 65, 70

Each number ends in 5 or 0!

Start at 78. Skip count in 5s to 113. 08,, 113 78, 83, 88, 93, 98, 103, 108,

he green boxes b The numbers in the show skip counting in 5s from 5 to 50. 50 1

32 3

42 2

217

Re ga le du ca tio n

Let’s count in 10s. What number comes next?

60 6

60 + 10 = 70. The next number is 70!

Start at 80. Skip count in 10s to 150. 150 0. 80, 90, 100, 110, 120, 130, 140, 0, 150 50

The numbers in t ones place the d don’t change!

Start at 237. Skip count in n 10ss to 307. 237, 247, 257, 267, 277, 287, 7, 297, 307 3 The numbers in the red boxes b s show sho h skip counting in 10s 0s from om 60 to t 100.

53 3

55 5

711

82 8

100

21 8

100

200

300

400

Re ga le du

500 + 100 = 600. The next number is 600!

ati on

Let’s count in 100s. What number comes next?

500

Start at 400. Skip count in 100s 0s to o 1000. 400, 500, 600, 700, 800, 900, 1,000 00s to 982. 982 98 Start at 382. Skip count in 100s 382, 482, 582, 682, 782, 882, 82, 2, 982

he yellow ellow boxes bo b The numbers in the show skip counting in 100s 0s from 600 60 to t 1,000.

The numbers in the ones and tens places don’t change!

510

520 530 30 540 550 560 570 580 590

600

610

620 0 630 640 650 660 670 680 690

700

710 0

720 730 740 750 760 72

790

800

810

820 830 840 850 860 870 880 890 8

900

910

920 930 940 950 960 970 980 990 1,000

770

780

219

Let’s Practice Skip count in 2s. Fill in the blanks.

Re ga le du ca tio n

(a) 2, 4, 6, 8,

(b) 46, 48, 50, 52,

Skip count in 10s. Fill in the he blanks. blanks blan

0, (a) 10, 20, 30, 40,

(b) 23, 33, 43, 3, 53, 3,

Skip p count ount in 100s. Fill Fi in the blanks. F 300 400, (a) 100, 200, 300, (b) 54, 54 154, 154 254, 25 354,

(c)) 170, 170 270, 27 370, 470,

22 0

(b) 75, 80, 85, 90,

Skip count in 5s. Fill in the blanks. (a) 5, 10, 15, 20,

Fill in the blanks. (a)

277 2

Re ga le du ca tio n

The numbers show skip counting by

re The next 2 numbers in the pattern are

(b)

38 8

The numbers show skip p counting unting by

and

40 4 0

66 6

The numbers mbers ers show skip s counting by

and

1120

220

numbers show skip counting by The n numb

next 2 numbers in the pattern are Th ne The

numbe in the pattern are The nextt 2 numbers

(d)

The next 2 numbers in the he pattern are

(c)

and

420

320 .

and

221

222

227

232

The numbers show skip counting by

The next 2 numbers in the pattern are

(f)

175

275 5

The numbers show skip counting ounting ting by

and

375 375

356

36 366 66

376 37

The numbers bers show skip s counting by

801 801

803 8

805

The nu numbers show skip counting by numb Th nex The next 2 numbers in the pattern are

222

475

and

386

396

The next ext 2 numbers in tthe pattern are

(h)

ar The next 2 numbers in the pattern are

(g)

24 24 242

237

ed uc ati on

(e)

and

807

809

. and

Find the missing number. Fill in the blanks. (a) 44

ati on

The numbers show skip counting by

56 5 6

rn iss The missing number in the pattern (b) ?

495

505

515 515 5

525 5 25 5

Re ga le du

475

b The numbers show skip counting by

58 5 8

535

545

ber in the pattern patt The missing number is

(c)

96 6

102

104

m ers show skip sk counting by The numb numbers

106

108

he missing numb num The number in the pattern is

(d)

270 27

370

470

570

670

Th nu The numbers show skip counting by The missing number in the pattern is

770

870

. . 223

(e) ?

195

200

205

210

215

2 20 220

Re ga le du ca tio n

185

The numbers show skip counting by

The missing number in the pattern is

(f)

302

304

306

308

0 310

The numbers show skip counting unting by

3 114 314

316

The missing number in the he pattern is

(g)

299

399

499 4 99

599 5 99 99

799

bers rs show skip s The numbers counting by

899

999

The missing sing numb number in the pattern is

(h)

1160 60 60

260 2 60

360

460

560

The nu numb numbers show skip counting by

missing number in the pattern is Th mi The

224

760

860

At Home Skip count. Fill in the blanks.

Re ga le du ca tio n

(a) Continue skip counting in 2s.

104

p counting co ng in 100s. 1 (b) Continue skip

360

225

ed uc ati on

102

633

(d) Continue skip counting ounting ting in 10s. 10s 10

Re g

888

22 6

Fill in the blanks.

304

ed uc ati on

(a) Skip count in 2s.

(b) Skip count in 10s.

130

Re ga

707

(d) Skip count unt in 100s. 100s

95 9 5

227

le du ca tio n

Solve It! I’m thinking of a number, see if you can guess It!

Wyatt thinks of a number for you to guess. uess. Here are the clues he gave. Can you guess uess the number? • • • • •

22 8

Between 300 and 360. You can get there if you u start rt counting countin by 3s at 300. The sum of the digits is 12. 2. It is even. Two of the digits are the he e same number.

Repeated Addition and Arrays

Re ga le du ca tio n

Let’s Learn

How many cherries are there altogether?

In each group, there are 2 cherries. es. 2+2+2=6 3 groups of 2 = 6 There are 6 cherries altogether. ther..

How many bananas are e there ere altogether? altoget altoge

In each group, oup, there are 3 bananas. 3 + 3 + 3 + 3 = 12 4 groups oups of 3 = 12

How many bananas banan are there altogether? ba

229

Re ga le du ca tio n

The frogs are arranged in rows. There are 5 frogs in each row. There are 2 rows. How many frogs are there?

5 + 5 = 10 2 groups of 5 = 10 There are 10 frogs.

How many beetles are there? e?

4 + 4 + 4 + 4 + 4 = 20 5 groups oups of o 4 = 20 There are re 20 beetles.

2 30

Let’s Practice Match.

Re ga le du ca tio n

2 groups of 4

4+4+4

5 groups of 3

4+4

3 groups of 4

3+3+3+3

2 groups of 5

5+5+5

4 groupss of of 2

3+3+3+3+3

3g groups roup ups o off 5

2+2+2+2

4 groups groups of 3

5+5

2 31

Fill in the blanks. a) (a)

3+3+3= There are

groups of 3.

Re ga le d

b) (b)

ca tio n

2+2+2+2= There are

groupss of gr o 2.

(c)

5+5+5+5= There er are

23 2

groups of 5.

Re ga le du ca tio n

(d)

There are

groups of 4.

(e)

groups g ps of o

There are

(f)

There are Th

groups of

2 33

Circle to make equal groups. Complete the equation.

Re ga le du ca tio n

(a) Circle 3 groups g of 4.

(b) Circle 5 groups of 2.

le 4 groups of 4. (c) Circle

2 34

Re ga le du ca tio n 4. Match.

2 35

Color the arrays. Write an addition equation.

Re ga le du ca tio n

(a) Show 2 rows of 5.

5 + 5 = 10

(b) Show 3 rows of 3.

23 6

Re ga le du ca tio n

(d) Show 5 rows of 3.

(e) Show 4 rows of 3.

(f) Show 5 rows of o 5.

2 37

At Home

Fill in the blanks. (a))

uc a

groups of 4.

There are

Re ga le

(b)

re There are

grou of groups

(c)

There are Th

238

groups of

= .

Circle to make equal groups. Complete the equation. (a) Circle 2 groups of 5.

Re ga le du ca tio n

(b) Circle 5 groups of 4.

le 5 groups of 3. (c) Circle

2 39

Color the grid. Write an addition equation.

Re ga le du c

(a) There are 3 eggs in each nest. There are 4 such nests. How many eggs are there re altogether?

There are

nestss altogether. together.

(b) The children sit in rows ws of 4. There are 5 rows ws off children. childre How many children en are there the altogether?

There are a

24 0

children altogether.

Solve It!

ed uc ati on

Ethan put 9 counting bears in 2 rows on his desk. He said he had more bears than Blake did.

Blake had 3 rows of 6 bears each. He disagreed ed d with Ethan e rows. rows and said he had more because he had more

Who was correct? Why? Draw a picture and to d use equations equa equ show your thinking.

2 41

Looking Back Write the number in numerals and words.

Re ga le du ca tio n

(a)

(b)

Fill in the blanks. (a)

500 50 +

242

+9=

Re ga le du ca tio n

(b)

Fill in the blanks. Write the number in numerals and words. ords. s. Hundreds

Tenss

hundreds dreds

tens

Ones

ones

Write the number.

The digit 9 is in the ones place. The digit 8 is in the hundreds place. The digit di 2 is in the tens place.

2 43

Fill in the blanks. The digit

is in the hundreds place.

The digit

is in the ones place.

837 83 37

Re ga le du ca tio

is in the tens place.

The digit

Fill in the blanks. (a)

9 0 2

(b)

Use > or < to fill f in the blanks.

((a) 131

244

7 6 4

30 301

(b) 673

678

727

(d) 902

920

8 (e) 528

509

(f) 897

907

Arrange the numbers in order. (a)

907

890

Re ga le du ca tio n

900

greatest

smallest

(b)

655

666

smallest

566

greatest est

Color the even numbers red.. e. Color the odd numberss blue. 11

310

243 990

101

128

499 590

823

642 64

751

888

778

186

6377

256

368 700

bla 10. Skip count.. Fill in the blanks. (a) 18, 20, 22, 24,

(b) 655, 5, 660, 665, 670, 6 670 7

(d) 8, 108, 208, 208 308,

2 45

11.

Circle to make equal groups. Complete the equation.

ed uc ati on

(a) Circle 2 groups of 5.

Re g

(b) Circle 5 groups of 5.

246

Re ga le du ca tio n

12. Color the grid. Write an addition equation. (a) There are 4 beetles on a leaf. There are 3 such leaves. How many beetles are there in all?

There are

beetles etless in all.

ns in a box. (b) There are 5 buns oxes There are 4 such boxes. How many buns in all? bun are there h here

are Th There a

buns in all.

2 47

Addition to 1,000

Re ga le du ca to n

Anchor Task

Hundreds

248

Tens

du ca tio n +

Ones

Re ga l

2 49

Let’s Learn Find 400 + 200.

ed uc ati on

Adding 100s and 10s

4+2=6 2 = 600 400 + 200

Add the hundreds. 400 + 200 = 600

Find 225 + 300.

Add the hundreds. undreds 225 25 + 300 = 525 52

2 50

4 2 6

0 0 0

2 3 5

2 0 2

5 0 5

ion

Find 253 + 10. 5+1=6 50 + 10 = 60

Add the tens.

5 1 6

3 0 3

Re ga le du c

253 + 10 = 263

Find 534 + 40.

Add the tens. ns. H

3 4 7

4 0 4

524 534 544 554 564 574 584

534 + 40 0 = 574 57

2 51

Let’s Practice Add the hundreds.

Re ga le du ca tio n

(a)

0 0

(b)

1 2

0 0

(d)

4 4

0 0

(f) (f

4 5

(c)

(e)

(g)

300 + 400 =

500 + 100 =

25 2

0 0

6 3

0 0

6 2

0 0

(h)

(i)

2 3

800 + 100 =

(j)

400 + 500 =

Add the tens. (a)

5 2

0 0

(b)

1 6

0 0

(d)

5 4

2 0

(f) f)

4 5

0 0

2 3

7 0

3 5

9 0

Re ga le du ca tio n

1 +

(c)

(e)

(g)

322 + 40 =

(h)

(i)

649 49 + 40 =

864 + 30 =

(j)

727 + 60 =

253

3. Fill in the missing numbers.

Re ga le du ca tio n

(a)

600

300

100

(b)

600

(c)

400

800

200

900

(d)

25 4

Fill in the missing numbers. (a)

Re ga le du ca tio n

652

556

628

698

774

(b)

(c)

(d)

255

Solve It!

Re ga le du ca tio n

Fill in the blanks. What is the rule? (a)

200

600

The rule is

(b)

412

700

25 6

5 0 500

938 938

462 46 62 2

The rule is

500 0 500

300

447

988

674

At Home Complete the equation.

Re ga le du ca tio n

(a) 500 + 300 =

(b) 300 + 300 00 =

(d) 400 + 200 =

(e) 300 + 400 =

(f) 100 00 0 + 800 =

Fill in the missing numbers. (a) 200 + (c)

= 400

+ 400 = 800

= 900

(e) 300 + (g)

+ 100 = 200

(b) b) 300 + (d)

= 800

+ 400 = 500

(f)) 300 3 + 30 (h)

= 600

+ 700 = 900

Complete the equation. tion..

(a) 534 + 10 =

(b) 10 + 879 =

(d) 80 + 616 =

(e) 60 + 328 28 =

(f) 80 + 911 =

Fill in the he missing numbers. numb nu (a) 10 + (c)

(e) 50 + g) (g)

= 225

+ 652 6 = 672 = 883

+ 113 = 183

(b) 356 +

(d)

(f) 465 + (h)

= 366

+ 50 = 570

= 495

+ 777 = 797

257

Addition Without Regrouping

Re ga le du ca tio n

Remember this!

Find 35 + 44.

Add the ones. A

d th Add the tens.

Tens Ones

35 + 44 = 79

Find 62 + 27. Add the ones. Tens Ones

6 2

2 7 9

Add the he tens. ens. Tens Ones

6 2 8

2 7 9

62 + 27 = 89 2 58

3 4

5 4 9

Tens Ones

3 4 7

5 4 9

Have a go!

Re ga le du ca tio n

Fill in the blanks. (a) 28 + 51 =

(e) 54 + 32 =

8= (g) 71 + 28

(b) 21 + 74 =

(d) 33 + 35 =

(f) 71 + 18 =

(h) 25 + 53 =

259

Let’s Learn

Re ga le du ca tio n

Farmer Joe picked 245 apples in the morning. Add thee on ones. He picked 23 apples in the afternoon. r? How many apples did Farmer Joe pick altogether? Let’s add 245 and 23. Hundreds

Tens

Ones

4 2

5 3 8

Add the tens.

4 2 6

5 3 8

Hundreds

Tens

Ones

245 + 23 = 268 Farmer 268 apples altogether. mer Joe Jo picked pic

260

Add the hundreds.

4 2 6

5 3 8

Re ga le du ca tio n

There are 255 pupils in Year 2. There are 314 pupils in Year 3. gether? her? How many pupils are there in Year 2 and Year 3 altogether?

dd the on Add ones.

Let’s add 255 and 314. Hundreds

Tens

Ones

2 3

5 1

5 4 9

Add the tens.

Hundreds

Tens

Ones

2 3

5 1 6

5 4 9

Add the hundreds.

255 55 + 314 3 = 569 There are 569 pupils in Year 2 and Year 3 altogether.

2 3 5

5 1 6

5 4 9 2 61

Let’s Practice Add.

Re ga le du ca tio n

(a)

Hundreds

Tens

Ones

2 6

5 3

6 2

(b)

Hundreds

Tens ns

Ones

2 62

Hundreds

Tens

Ones

Re ga le du ca tio n

(c)

(d)

Hundreds

Tens n

5 1

2 5

4 4

6 3

4 2

5 3

Ones

2 63

Add. (a)

2 6

(b)

3 1

2 5

(d)

1 5

1 4

(f)

4 1

4 0

2 4

(h)

2 7

6 3

0 9

(j)

1 4

5 3

6 2

(l)

1 8

3 5

5 2

7 2

9 0

2 6

3 2

1 6

6 3

5 2

4 4

7 1

5 4

6 3

Re ga le du ca tio n

(c)

(e)

(g)

(i)

(k) k)

26 4

Add. (a) 251 + 32 =

(b) 308 + 71 =

Re ga le du ca tio n

5 3

1 2

1 1

6 1

3 4

(i)

6 2

4 4

6 2

2 6

0 7

1 7

5 3

2 5

4 4

6 2

5 4

4 5

(h) 446 + 342 =

1 0

0 1

469 + 210 = 4 2

8 1

(f) 152 15 + 735 =

(g) 110 + 801 = 1 8

0 7

(d) 620 0 + 267 =

(e) 264 + 624 = 2 6

(j)

6 1

9 0

4 3

354 + 645 = +

3 6

2 65

Re ga

Use number disks to represent the additions. Write the numbers in the equation.

(a) 112 + 5 =

(b) 235 + 4 =

06 + 12 = (c) 306

(d) 237 + 22 =

(e) 471 + 18 =

(f) 645 + 43 =

(g)) 832 + 65 =

(h) 701 + 95 =

26 6

Hands On

Tens

Ones

ed uc ati on

Hundreds

Re ga

What connection do you notice e between betwee the Base Ten blocks and the disks?

How can n you use each of o them to help you solve addition problems? ms??

2 67

At Home Fill in the blanks. Add.

Re ga le du ca tio n

(a)

252 + 6 =

(b)

(c)

122 + 156 =

(d) (d

(e)

530 + 306 =

471 + 426 =

268

703 7 + 104 = 70

(f) 624 + 342 =

(g))

421 + 53 =

(h)

154 + 742 =

Add. Show your working. (a) 654 + 14 =

(b) 972 + 6 =

(d) d) 313 + 362 =

Re ga le du ca tio n

(e) 703 + 254 =

(g) 85 5 + 912 =

(f) 540 + 307 =

(h) 563 + 432 =

2 69

438 + 61 =

(j)

606 + 271 =

Re ga le du ca tio n

(i)

(k) 416 + 552 =

27 0

(l))

818 + 151 =

(m) 18 + 981 =

(n) 180 + 717 =

32 + 656 = (o) 332

(p) 541 + 436 =

Solve It! Ethan left his mathematics notebook outside. Rain has washed away some of the numbers. Write the missing numbers. (a)

1 1 0 + 4 4 5 5 5

(b)

2 4 1 7 + 4 6 6 8

(c)

6 1 4 + 3 3 4 9 4 8

(d) (d d)

2 1 0 + 4 7 8 6 8 8

(e)

2 5 2 + 2 4 6 4 9 8

(f) (f)

7 3 4 + 1 5 1 8 8 5

(g)

6 0 2 + 3 9 5 9 9 7

(h)

2 6 3 + 5 2 3 7 8 6

((i)i)

3 8 6 + 5 0 1 8 8 7

(j)

5 1 2 + 2 7 6 7 8 8 2 71

Addition With Regrouping

Re ga le du ca tio n

Remember This!

Add 36 and 28. Tens

Ones

Tens ens Ones

3 2

6 ones + 8 ones = 14 ones. Regroup the ones. 14 ones = 1 ten 4 ones Tens Ones

6 8

Add the on ones.

Tens Ones 1

3 2

6 8 4

Tens

Ones On

Add the tens.

Tens Ones

Add d the tens. t 1 tens + 3 tens + 2 tens = 6 tens 36 + 28 = 64

27 2

3 2

6 8

Have a Go!

Re ga le du ca tio n

Fill in the blanks. (a) 27 + 53 =

(e) 37 + 35 =

(g) 27 + 48 8=

(b) 56 + 25 =

(d) 66 + 29 =

(f) 64 + 17 =

(h) 28 + 59 =

2 73

Let’s Learn

Re ga le du ca tio n

Find 236 + 207. Hundreds

Tens

Ones

nes. Add the ones. on o 6 ones + 7 ones = 13 ones H

2 2

3 0

6 7 3

Regroup the ones.

13 ones = 1 ten 3 ones

Hundreds

Tens

Ones On

Add the tens. 1 ten + 3 tens + 0 tens = 4 tens H

2 2

3 0 4

6 7 3

Add the hundreds. 2 hundreds + 2 hundreds = 4 hundreds H

236 + 207 = 443

27 4

2 2 4

3 0 4

6 7 3

Find 262 + 155. Tens

Ones

Add the ones. 2 ones + 5 oness = 7 ones

Re ga le du ca tio n

Hundreds

2 1

6 5

2 5 7

Add d the tens. 6 tens ens + 5 te tens = 11 tens Regroup the tens. Regr

Hundreds

Tens

Ones

11 tens = 1 hundred 1 ten 1

2 1

6 5 1

2 5 7

Add the hundreds. 1 hundred + 2 hundreds + 1 hundred = 4 hundreds 1

2 1 4

6 5 1

2 5 7

262 + 155 = 4 417 2 75

Find 358 + 286. Tens

Ones

Add the ones. s. 8 ones + 6 oness = 14 ones

Re ga le du ca tio n

Hundreds

3 2

5 8

8 6 4

Regroup the t ones.

114 ones = 1 ten 4 ones

Hundreds

Tens

Ones O

Add the tens. 1 ten + 5 tens + 8 tens = 14 tens

27 6

8 4

8 6 4

Tens

Ones

Re ga le du ca tio n

Hundreds

Regroup p the tens.

14 tens = 1 h hundred 4 tens

Hundreds

Tens

Ones O

Add the hundreds. 1 hundred + 3 hundreds + 2 hundreds = 6 hundreds

2 6

8 4

8 6 4

358 + 286 = 64 644

2 77

Let’s Practice Add.

Re ga le du ca tio n

(a)

Hundreds

Tens

Ones

8 6

3 4

8 4

2 5

(b)

Hundreds

Tens ns

Ones

2 78

Hundreds

Tens

Ones

Re ga le du ca tio n

(c)

(d)

Hundreds

Tens ns

5 2

8 5

8 9

6 3

6 2

5 5

Ones On

2 79

Add. (a)

8 6

(b)

7 7

2 5

(d)

1 5

1 4

(f)

4 1

4 3

4 9

(h)

2 7

6 6

7 9

(j)

2 4

8 3

3 8

(l)

3 5

7 8

5 5

5 1

5 2

7 2

9 0

2 6

3 2

7 8

6 1

5 9

6 4

2 2

9 9

6 2

Re ga le du ca tio n

(c)

(e)

(g)

(i)

(k) k))

280

Add. (a) 451 + 52 =

(b) 658 + 81 =

Re ga le du ca tio n

5 5

1 2

7 1

6 4

(i)

7 6

9 8

5 3

7 6

0 7

5 2

5 6

5 8

4 6

8 2

6 7

7 6

(h) 348 + 362 =

1 7

5 7

869 + 94 = 8

8 1

(f) 555 55 + 268 =

(g) 115 + 877 = 1 8

5 8

(d) 570 70 + 367 =

(e) 179 + 168 = 1 1

(j)

6 9

9 4

3 3

267 + 576 = +

2 5

2 81

Hands On

Re ga le du ca tio n

Let’s add mentally! Hundreds

282

Tens

Ones

Set up this expression on your chart.

Re ga le du ca tio n

327 + 53

Let’s add by place value! Start by adding the tens disks. 327 + 50

Then add the ones disks: 377 + 3

Remember to make a ten!

Do these too, using the disks to compose a ten or a hundred when you can. (a) 253 + 27

(b) 253 + 127

(d) 149 1 + 128

(e) 186 + 36

(f) 186 + 136

(g) 337 + 15

(h) 337 + 115

(i)

(j)

246 + 163

(l)

186 + 197

246 + 63

(k) 517 17 + 97

2 83

At Home Fill in the blanks. Add.

Re ga le du ca tio n

(a) 554 + 9 =

(e) 578 + 289 =

(g) g) 479 79 + 453 =

284

(b) 681 + 53 =

(d) (d 505 50 + 105 =

(f) 699 + 176 =

(h) 287 + 668 =

Add. Show your working. (a) 654 + 77 =

(b) 372 + 86 =

Re ga le du ca tio n

(d) d) 383 + 332 33 =

(e) 745 + 189 =

(f) 549 + 375 =

5 + 836 = (g) 85

(h) 508 + 432 =

2 85

558 + 268 =

(j)

696 + 174 =

Re ga le du ca tio n

(i)

(k) 487 + 365 =

(m) 58 + 268 =

286

(l))

376 + 530 =

(n) 654 + 258 =

63 + 198 98 = (o) 763

(p) 676 + 264 =

Solve It! Ethan left his mathematics notebook outside again! Rain has washed away some of the numbers. Write the missing numbers. (a)

1 1 7 + 4 4 5 5 6 2

(b)

2 4 1 + 4 9 7 7 3 8

(c)

5 6 7 + 3 3 4 9 0 1

(d) (d)

6 5 7 + 1 7 8 8 3 5

(e)

6 3 8 + 2 4 8 8 8 6

(f) (f

1 7 9 + 1 5 9 3 3 8

(g)

5 6 6 + 3 9 7 9 6 3

(h)

2 6 6 + 5 9 9 8 6 5

( i) (i)

3 8 6 + 2 4 8 6 3 4

(j)

2 7 9 + 5 1 2 8 0 1 2 87

Looking Back Complete the equation.

Re ga le du ca tio n

(a) 100 + 200 =

(b) 100 + 500 0=

(d) 400 + 300 =

(e) 200 + 700 =

(f) 100 0 + 100 =

(g) 200 + 300 =

(h) 500 0 + 300 =

(i)

(j)

300 + 300 =

Complete the equations. (a) 140 + 10 =

140 + 100 =

407 + 300 =

(e) 889 + 10 =

889 + 100 00 =

28 8

400 + 500 =

(b) 230 23 + 40 =

230 + 400 =

(d) ( 66 + 20 =

66 + 200 =

(f) 520 + 30 =

520 + 300 =

Complete lete the equations. equations equa

(a) 2311 + 10 =

(b) 10 + 549 =

(d) 60 + 311 =

(e) 60 + 328 32 =

(f) 90 + 909 =

(g) g) 47 + 40 =

(h) 50 + 717 =

Add. (a)

6 1

8 1

(b)

2 1

1 7

(d)

4 2

3 1

3 3

6 2

3 4

4 4

0 4

8 1

Re ga le du ca tio n

(c)

2 7

(e) 553 + 234 = 5 2

(g) 456 + 232 =

(f) f) 308 + 441 4 =

5 3

3 4

(h) 751 + 206 =

(i)

1577 + 131 =

3 4

(j)

324 + 324 =

2 89

Add. 1 1

7 7

(b)

2 1

4 7

6 8

(d)

1 7

4 4

6 5

5 2

2 3

8 9

5 7

9 8

8 7

Re ga le du ca tio n

(a)

(c)

(e) 459 + 142 = +

4 1

(g) 275 + 275 =

(f) f) 398 + 487 4 =

5 4

9 2

(h) 536 + 74 =

(i)

677 77 + 296 =

29 0

3 4

(j)

187 + 655 =

Add. Show your working. (a) 186 + 68 =

(b) 326 + 77 =

(d) d) 649 + 123 =

(e) 78 + 769 =

(f) 421 + 179 =

Re ga le du ca tio n

8 + 685 = (g) 38

(h) 543 + 369 =

2 91

This publication possible without the tireless effort of our production team. ation would not have been pos Special thanks to: Daniel Hui Guan, Kevin Mahoney, Winston Goh, Jesse Singer, el Cole, Matthew Cole, Wang W Joseph Taylor-Pritchard, Sophie Taylor-Pritchard, Tejal Thakur, eph Anderson, Halle T Taylor-Pr Natchanuch atchanuch Nakapat,Var Nakapat,Varasinun Mathanattapat, Kanungnit Pookwanmuang, Saijit Lueangsrisuk

Original Illustrations: Natchanuch Nakapat, GraphicsRF, Blue Ring Media and Interact Images Illustrat Nat Royalty-free images: Shutterstock, Adobe Stock imag S