Workbook Prathomsuksa 1 © Pelangi Publishing (Thailand) Co., Ltd. 2022 All rights reserved. No part of this publication may be reproduced, stored in any retrieval system or transmitted in any form or by any means without permission of Pelangi Publishing (Thailand) Co., Ltd. 2022
BJRC361031_GoGetMaths WB Prelimpage P1.indd 1
885-87220-0349-4 First Published 2022
5/11/2564 BE 12:19
Contents Chapter 1 Chapter 2 Chapter 3 Chapter 4 Chapter 5 Chapter 6
Chapter 7 Chapter 8 Chapter 9 Chapter 10 Chapter 11
Numbers 0 to 10
1
Practices Think
1 15
Addition within 10
16
Practices Think
16 24
Subtraction within 10
25
Practices Think
25 33
Shapes and patterns
34
Practices Think
34 43
Numbers to 20
44
Practices Think
44 53
Addition and subtraction within 20
54
Practices Think
54 75
Revision 1
76
Length
83
Practices Think
83 100
Mass
101
Practices Think
101 118
Numbers to 100
119
Practices Think
119 132
Addition and subtraction within 100
133
Practices Think
133 154
Picture graphs
155
Practices Think
155 159
Revision 2
160
Chapter 1
Numbers 0 to 10
Practice 1
Counting to 10
1. Count. Complete the table. Items .g.
Hindu-Arabic words
Hindu-Arabic numerals
zero
0
one
1
two
2
three
3
four
4
five
5
six
6
Thai numerals
๐ ๑ ๒ ๓ ๔ ๕ ๖ Chapter 1 | 1
seven
7
eight
8
nine
9
ten
10
๗ ๘ ๙ ๑๐
2. Count. Write the numbers in Hindu-Arabic words and numerals. .g.
a
three
b
2 | Mathematics Prathomsuksa 1
3
c
3. Color the correct number of items. .g.
4
a
7
b
0
c
9
d
5
Chapter 1 | 3
4. Count back. Fill in the blanks. .g.
9
10
5 0
2
5. Fill in the missing numbers. .g.
10
9
8
7
4
3
2
1
8
7
6
5
6
5
4
3
a
b
c
4 | Mathematics Prathomsuksa 1
6
Practice 2
Comparing and ordering numbers
1. Match. Underline the correct words. .g.
Highlighter pens
Pens
The number of highlighter pens is (equal, not equal) to the number of pens. a
Books
Calculators
The number of books is (equal, not equal) to the number of calculators. b
Paper clips
Brushes
The number of paper clips is (equal, not equal) to the number of brushes. c
Rulers
Scissors
The number of rulers is (equal, not equal) to the number of scissors. Chapter 1 | 5
2. Match. Then, underline the correct words. .g.
Butterflies
Flowers
There are more (butterflies, flowers) than (butterflies, flowers). There are fewer (butterflies, flowers) than (butterflies, flowers). a
Shoes
Socks
There are more (shoes, socks) than (shoes, socks). There are fewer (shoes, socks) than (shoes, socks). b
Cats
Fish
There are more (cats, fish) than (cats, fish). There are fewer (cats, fish) than (cats, fish). 6 | Mathematics Prathomsuksa 1
3. Count. Fill in the blanks with the numbers. .g.
2
3
is greater than
2
.
3
2
is smaller than
3
.
a 5
5
is greater than
3
.
3
3
is smaller than
5
.
b 4
6
is greater than
4
.
6
4
is smaller than
6
.
c 9
9
is greater than
8
.
8
8
is smaller than
9
. Chapter 1 | 7