Go Get Maths Workbook P4 samplebook

Workbook Prathomsuksa 4 © 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

BJRC364031_GoGetMaths WB Prelimpage P4.indd 1

885-87220-0362-3 First Published 2022

19/1/2565 BE 09:25

Contents Chapter 1 Chapter 2 Chapter 3 Chapter 4 Chapter 5 Chapter 6

Chapter 7 Chapter 8 Chapter 9 Chapter 10 Chapter 11

Content SG Maths WB P4 page ii.indd 2

Numbers

1

Practices Think

1 13

Addition and subtraction

14

Practices Think

14 28

Multiplication and division

29

Practices Think

29 51

Mixed operations

52

Practices Think

52 63

Fractions

64

Practices Think

64 86

Time

87

Practices Think

87 103

Revision 1

104

Decimals

112

Practices Think

112 130

Addition and subtraction of decimals

131

Practices Think

131 149

Geometry

150

Practices Think

150 162

Squares and rectangles

163

Practices Think

163 188

Two-way tables and bar charts

189

Practices Think

189 199

Revision 2

200

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Chapter 1 Numbers Practice 1

Counting beyond 100,000

1. Count. Write in Hindu-Arabic numerals and Thai numerals. .g .

100,000

10,000

10,000

1,000

100

10

1

100,000

10,000

10,000

1,000

100

10

1

100,000

10,000

10,000

100

10

1

100,000

10,000

100

1

10,000

1

๔๘๒,๔๓๕

482,435 a

100,000

100,000

10,000

1,000

1,000

100

100,000

10,000

1,000

1,000

100

1

100,000

10,000

1,000

100

1

100,000

1,000

100

1

100,000

1,000

1

๖๓๗,๔๑๔

637,414 b

10

1,000,000

100,000

10,000

1,000

100

100

10

1

1,000,000

100,000

10,000

1,000

100

100

10

1

1,000,000

100,000

10,000

1,000

100

100

100,000

10,000

1,000

100

100

10,000

3,454,923

1

100

๓,๔๕๔,๙๒๓ Chapter 1 | 1

SG Maths WB P4 Unit 01-04 not ans.indd 1

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2. Write in numerals. .g.

Six hundred and fifty thousand four hundred and seventeen

650,417

a Three hundred seventy-four thousand six hundred and twenty-five

374,625

b Eight hundred and sixty-one thousand two hundred and seventy-eight

861,278

c One million eight hundred and three thousand one hundred and ninety-nine

1,803,199

d Thirty-four million twenty-one thousand one hundred and six

34,021,106

e Seventy-five million three hundred and forty-seven thousand two hundred and twenty-one

75,347,221

3. Write in words. .g .

a

b

ac

d

e

174,687

One hundred and seventy-four thousand six hundred and eightyseven

207,634

Two hundred and seven thousand six hundred and thirty-four

531,158

Five hundred and thirty-one thousand one hundred and fifty-eight

3,578,009

Three million five hundred and seventy-eight thousand and nine

7,674,547

Seven million six hundred and seventy-four thousand five hundred and forty-seven

20,368,975

Twenty million three hundred and sixty-eight thousand nine hundred and seventy-five

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4. Fill in the blanks. .g .

a

b

c

d

124,684 =

673,874 =

457,341 =

1

hundred thousand 2

ten thousands 4

6

hundreds 8

ones

6

hundred thousands 7

ten thousands 3

8

hundreds 7

ones

4

hundred thousands 5

ten thousands 7

3

hundreds 4

one

tens 4

tens 4

tens 1

thousands

thousands

3

millions 8

4

thousands 2

hundreds 7

tens 5

24,916,287 = 2

ten millions

4

millions

9

hundred thousands

1

ten thousand

6

thousands

2

hundreds

7

ones

3,834,275 =

hundred thousands 3

thousands

ten thousands ones

8

tens

5. Fill in the blanks. .g .

34,741 =

30,000

+ 4,000 + 700 + 40 + 1

a 64,297 = 60,000 + 4,000 +

200

+ 90 + 7

b 600,000 + 50,000 + 4,000 + 700 + 80 + 3 = c

241,726 = 200,000 + 40,000 + 1,000 + 700 +

d 3,000,000 + 400,000 + e

50,000

654,783 20

+6

+ 7,000 + 600 + 70 + 2 = 3,457,672

54,386,418 = 50,000,000 + 4,000,000 + 300,000 + 80,000 + 6,000 + 400 +

10 + 8 Chapter 1 | 3

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6. Fill in the blanks based on the number below.

12,486,379 .g .

The digit

1

is in the ten millions place. Its value is

a The digit

2

is in the millions place. Its value is

b The digit

4

is in the hundred thousands place. Its value is

c

The digit

8

is in the ten thousands place. Its value is

d The digit

6

is in the thousands place. Its value is

6,000

e

The digit

3

is in the hundreds place. Its value is

300

f

The digit

7

is in the tens place. Its value is

70

.

g The digit

9

is in the ones place. Its value is

9

.

10,000,000 .

2,000,000 .

400,000

.

.

80,000 . .

7. Fill in the blanks based on the number below.

67,145,892 .g .

The digit 4 is in the

ten thousands

a The value of digit 8 is b The digit c

7

6

.

is in the millions place.

The value of digit

d The digit

800

place.

9

is 90.

is in the ten millions place.

e

The digit 1 is in the

f

The value of digit 5 is

hundred thousands 5,000

place.

.

4 | Mathematics Prathomsuksa 4

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Practice 2

Comparing and ordering numbers

1. Fill in the blanks. Compare. .g .

HTh

TTh

Th

H

T

O

374,124

3

7

4

1

2

4

610,714

6

1

0

7

1

4

3

6

hundred thousands is smaller than

374,124 a

is smaller than

hundred thousands.

.

610,714

HTh

TTh

Th

H

T

O

721,675

7

2

1

6

7

5

721,879

7

2

1

8

7

9

6

8

hundreds is smaller than

721,675 b

is smaller than

hundreds.

721,879

.

M

HTh

TTh

Th

H

T

O

4,340,247

4

3

4

0

2

4

7

4,340,248

4

3

4

0

2

4

8

7

ones.

8

ones is greater than

4,340,248

is greater than

4,340,247 .

Chapter 1 | 5

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2. Shade the greater number. .g .

b

d

437,248

473,457

567,257

568,257

3,607,455

3,607,454

a

c

e

167,541

167,451

347,674

307,417

18,340,687

18,430,876

14,014,745

31,240,141

274,854

274,584

64,745,327

64,745,727

3. Shade the smaller number. .g .

b

d

5,320,120

5,324,120

654,831

655,860

57,147,368

57,147,380

a

c

e

4. Fill in the blanks with < or >.

87,741

>

87,714

a 12,474

>

2,474

b 340,147

<

347,879

c

67,745

<

67,787

e

25,784,340

.g .

d 7,416,897

<

8,748,778

>

25,748,340

6 | Mathematics Prathomsuksa 4

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5. Mark these numbers on the number line. Then, arrange the numbers. .g .

111,200

113,800 111,200

110,600 110,000

112,500 111,900

111,000

110,600

111,900

112,500

112,000

113,800 113,000

114,000

Starting with the smallest number: 110,600,

111,200, 111,900,

112,500,

425,780

425,630

425,820

a

425,600

113,800

425,720

425,700

425,690

425,800

Starting with the smallest number: 425,630,

b

721,000

425,690,

425,720,

721,600

720,000

425,780,

425,820

720,700

719,700

721,000

720,300

722,000

Starting with the greatest number: 721,600,

721,000,

720,700,

720,300,

719,700

Chapter 1 | 7

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