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Extra Practice Course 2A 1

Name:      Date:   

CHAPTER

1 The Real Number System

Lesson 1.1 Representing Rational Numbers on the Number Line

Find the absolute value of each fraction. Use a number line to show how  far the fraction is from 0.  Write fractions in simplest form.

1. 68

2. 4712

3. 2 613

4. 2 3615

Write each integer or fraction as  mn

 in the simplest form where m and n are integers. 

5. 12 6. 267

7. 2560 8. 750

14

Write each mixed number or decimal as  mn

 in the simplest form where m and n are integers.

9. 3 518

10. 21 121

11. 12 13

12. 272 512

13. 0.5 14. 2.51

15. 3.495 16. 20.135

17. 21.32 18. 25.52

MIF_ExtraPractice C2_Ch01.indd 1 08/12/11 11:41 AM

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2 Chapter 1 Lesson 1.1

Complete.

19. Suppose the line below represents a thermometer calibrated in degrees Celsius. Locate each of the following temperatures on the thermometer.

7°C, 22.5°C, 23°C, 3.5°C, 20.8°C

26 24 22 0 2 4 6 8

ºC

20. Locate the following rational numbers correctly on the number line.

2 2 240 382

5261 5, ,7 6

Graph each rational number on a separate number line.

21. 66 13

22. 1356

23. 2 1112

24. 2 7911

25. 32.4 26. 249.9

Complete.

27. List the numbers below from the least to the greatest. Then graph them on a number line.

24 514

, 6.7, 214

, 23.12, 2 227

, 1.01

�41 �40 �39 �38 �37

MIF_ExtraPractice C2_Ch01.indd 2 08/12/11 2:38 PM

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86 Answers

Answers

Chapter 1

Lesson 1.1

1. 34

10

34

unit34

2. 4712

40 1 2 3

4712

units4712

3. 6

13

1

unit

0

613

unit6

13

4. 125

40 2

125

units125

5. 121 6. 2

67 67or1

671 1

, 2

2

7. 5

12 8. 375

7

9. 5918 10. 2

22 22or21

2221 21

, 2

2

11. 373

12. 2869 869or12

86912 12

, 2

2

13. 12 14.

251100

15. 699200

16. 227 27or

20027

200 200, 2

2

17. 233 33or25

3325 25

, 2

2 18. 2

138 138or25

13825 25

, 2

2

19.

26 24 22 0 2 4 6 8

7°C3.5°C20.8°C23°C

22.5°C

ºC

20.

�4025

�3856

�2617

�41 �40 �39 �38 �37

21. 6765 66

6613

22. 2321 22

1356

23. 0�1

�1112

24. �8 �7

�7911

25. 32 33

32.4

26. �50 �49

�49.9

27. 2 2 24 3 12 1 01 6 714

227 4

5 21, , . , . , , .

�5 �4 �3 �2 �1 0 1 2 3 4 5 6 7

6.71.01 214

22�

7

�3.12�4

514

MIF_ExtraPractice_C2_Ch01-Ch05_Ans.indd 86 09/12/11 5:11 PM