Thinking Cap 2

Addition and Subtraction within 1000

1 xample 1

There are 214 guests at the school festival. There are 116 adults and the rest are children. (a) How many children are there at the school festival? (b) If 52 children from School P are invited to join the festival, how many children are there in total? olution (a)

214 116

?

Adult

Children

214 – 116 = 98

There are 98 children at the school festival.

(b)

2 1 4 – 1 1 6 9 8

? 98

52

98 + 52 = 150

There are 150 children in total.

1

01_U1 [Think Cap] Math P2.indd 1

1 10 14

1

9 8 + 5 2 1 5 0

5/14/13 4:28 PM

Mathematics Primary 2 Unit 1 Addition and Subtraction within 1000

xample 2 A farmer plucked 209 apples on Saturday. He plucked 45 fewer apples on Sunday than on Saturday. How many apples did he pluck altogether?

olution Saturday

209 ?

Sunday

? 45

209 – 45 = 164

He plucked 164 apples on Sunday.

209 + 164 = 373

He plucked 373 apples altogether.

01_U1 [Think Cap] Math P2.indd 2

1 10

2 0 9 – 4 5 1 6 4

1

2 0 9 + 1 6 4 3 7 3

2

5/14/13 4:28 PM

Mathematics Primary 2 Unit 1 Addition and Subtraction within 1000

ractice Solve the following word problems. 1. There are 372 local and 226 foreign tourists in the Universal Studios. How many tourists are there in total?

2. A baker bought 900 pineapples. After using some pineapples to make pineapple jam, there are 85 pineapples left. How many pineapples were used to make the pineapple jam?

3

01_U1 [Think Cap] Math P2.indd 3

5/14/13 4:28 PM

Mathematics Primary 2 Unit 1 Addition and Subtraction within 1000

3. There are 300 eggs in the basket. How many more eggs have to be bought to make a total of 500 eggs in the basket?

4. What number must you take from 864 to leave 711?

01_U1 [Think Cap] Math P2.indd 4

4

5/14/13 4:28 PM

Mathematics Primary 2 Unit 1 Addition and Subtraction within 1000

5. Martin has 155 red marbles and 36 blue marbles. He buys 15 more blue marbles from the shop. How many red and blue marbles does he have altogether?

6. The florist had 663 stalks of roses for sale. He sold 350 stalks of roses in the morning. In the late evening, he sold another 290 stalks of roses. How many stalks of roses did he have left?

5

01_U1 [Think Cap] Math P2.indd 5

5/14/13 4:28 PM

Mathematics Primary 2 Unit 1 Addition and Subtraction within 1000

7. Father has 1000 old coins. He gives some old coins to Sam and 315 old coins to Tommy. He has 431 old coins left. How many old coins does he give to Sam?

8. Mr David and Mr Peter have 402 cows on their farms. If Mr Peter has 253 cows, how many fewer cows does Mr David have than Mr Peter?

01_U1 [Think Cap] Math P2.indd 6

6

5/14/13 4:28 PM

Mathematics Primary 2 Unit 1 Addition and Subtraction within 1000

9. Wilson’s grandmother is 101 years old. She is 30 years older than Wilson’s father. Find the total age of both of them.

10. John and Steve have the same number of cards at first. Steve gives away 31 cards and has 470 left. After that Steve gives John another 17 cards. How many cards does John have altogether now?

7

01_U1 [Think Cap] Math P2.indd 7

5/14/13 4:28 PM

Mathematics Primary 2 Unit 1 Addition and Subtraction within 1000

11. Celine baked 120 muffins on Saturday. She baked 50 more muffins on Sunday. If she baked 60 less muffins on Monday than on Sunday, how many muffins did she bake on Monday?

12. There are 100 questions in the first part of a test. The second part of the test has 75 more questions than the first part while the third part has 25 fewer questions than the first part. How many questions are there altogether?

01_U1 [Think Cap] Math P2.indd 8

8

5/14/13 4:28 PM

2

Multiplication and Division (Tables of 2 and 3)

xample 1 Mrs Smith has 18 raspberries. She put them equally on 3 plates. How many raspberries are there on each plate?

olution 18 Raspberries Raspberries

Raspberries

?

18 Ăˇ 3 = 6 There are 6 raspberries on each plate.

9

02_U2 [Think Cap] Math P2.indd 9

ÂŠ Pelangi Publishing Singapore Pte. Ltd.

5/15/13 9:26 AM

Mathematics Primary 2 Unit 2 Multiplication and Division (Tables of 2 and 3)

xample 2 Rick bought 6 plastic bags of goldfish. Each plastic bag contains 3 goldfish. He divided them equally into 2 fish tanks. How many goldfish were there in each fish tank?

olution Goldfish Goldfish Goldfish Goldfish Goldfish Goldfish 3

3

6 × 3 = 18 Rick bought 18 goldfish.

18 Fish tank

Fish tank

?

18 ÷ 2 = 9 There were 9 goldfish in each fish tank.

02_U2 [Think Cap] Math P2.indd 10

10

5/15/13 9:26 AM

Mathematics Primary 2 Unit 2 Multiplication and Division (Tables of 2 and 3)

ractice Solve the following word problems. 1. During the PE lesson, 18 pupils are grouped into 2 teams. How many pupils are there in each team?

2. Scott has 2 coin albums. Lewis has 3 times as many coin albums as Scott. How many coin albums does Lewis have?

11

02_U2 [Think Cap] Math P2.indd 11

5/15/13 9:26 AM

Mathematics Primary 2 Unit 2 Multiplication and Division (Tables of 2 and 3)

3. Grandfather takes 3 vitamin pills a day. How many vitamin pills does he take in 1 week?

4. Linda had 35 mangoes. She kept 19 mangoes for herself and gave the rest equally to her 2 friends. How many mangoes did each of her friends get?

02_U2 [Think Cap] Math P2.indd 12

12

5/15/13 9:26 AM

Mathematics Primary 2 Unit 2 Multiplication and Division (Tables of 2 and 3)

5. Angela has 21 sweets. She shares them equally among 2 of her friends. How many sweets do both of her friends receive in total?

6. Jenny bought a bag for $88 and 5 pens at $2 each. How much did she pay for all the items?

13

02_U2 [Think Cap] Math P2.indd 13

5/15/13 9:26 AM

Mathematics Primary 2 Unit 2 Multiplication and Division (Tables of 2 and 3)

7. Grandmother baked some muffins. She ate 3 muffins and packed the rest of the muffins into 6 boxes. Each box contains 2 muffins. How many muffins did grandmother bake altogether?

8. There are 24 pupils and 3 teachers in a bus. They are divided equally into groups of 3. Find the number of groups that can be formed.

02_U2 [Think Cap] Math P2.indd 14

14

5/15/13 9:26 AM

Mathematics Primary 2 Unit 2 Multiplication and Division (Tables of 2 and 3)

9. A painter needs 3 tins of paint to paint a room. He has 8 rooms to paint today. If he has 40 tins of paint, how many tins of paint will he have left at the end of the day?

10. A pack of 2 bars of soap is sold for $3. Mother pays $12 for some soap. How many bars of soap does she get altogether?

15

02_U2 [Think Cap] Math P2.indd 15

5/15/13 9:26 AM

Turn static files into dynamic content formats.

Create a flipbook