Chapter 2 Extra Practice Answers - Central Dauphin School District

Chapter 2 Extra Practice Answers

Lesson 2-1

4 1. 5

2 4. 5

93 7. 125

10. 5225 13. 0.125 16. 1.375 19. 0.32 22. 6.6

8 2. 25

5. 178

243 8. 500

11. 358 14. 0.7

17. 0.45

20. 0.4375

23. 0.44

Lesson 2-2

13 1. 100

3 4. 20

9 7. 20

3 10. 25

13. 77% 16. 12% 19. 40% 22. 95%

1 2. 4

3 5. 5

7 8. 50

17 11. 20

14. 75%

17. 30%

20. 6%

23. 44%

Lesson 2-3

1. 0.05 4. 0.56 7. 1 10. 0.09 13. 2% 16. 7% 19. 35% 22. 71%

2. 0.22 5. 0.75 8. 0.37 11. 0.9 14. 20% 17. 66% 20. 31% 23. 24%

27 3. 50

9 6. 10

56 9. 125

12.

12210

15. 0.55

18. 0.9375

21. 2.3

24. 4.16

2 3. 25

7 6. 10

2

9.

5

1 12. 25

15. 85%

18. 54%

21. 20%

24. 25%

3. 0.5 6. 0.01 9. 0.19 12. 0.04 15. 3% 18. 11% 21. 9% 24. 8%

Course 1 ? Chapter 2 Fractions, Decimals, and Percents

Lesson 2-4

1. 8.95; 81290 4. 9.2; 915

7. 0.0042; 21

5, 000

10. 825% 13. 1,400% 16. 1,250% 19. 350% 22. 195% 25. 0.56%

2. 5.55; 51210 5. 1.22; 11510

8. 0.0078; 39

5, 000

11. 765% 14. 1,620% 17. 275% 20. 1,200% 23. 0.2% 26. 0.64%

Lesson 2-5

1. >

4. <

7. <

10. >

13.

38,

12,

34,

5 6

16. 0.6, 23, 70%

19. 42%, 37, 0.44

2. <

5. >

8. >

11. <

14.

152,

12,

35,

3 4

17.

17%,

0.8,

17 20

20. 10.5%, 570, 0.15

Lesson 2-6

1.

Sample

answer:

2 5

of

150

is

60.

3.

Sample

answer:

1 4

of

80

is

20.

5.

Sample

answer:

1 6

of

30

is

5.

7.

Sample

answer:

1 15

of

90

is

6.

9.

Sample

answer:

3 100

of

50

is

1.5.

11.

Sample

answer:

1 4

of

48

is

12.

13.

Sample

answer:

1 2

of

130

is

65.

15.

Sample

answer:

1 10

of

40

is

4.

17.

Sample

answer:

9 10

of

140

is

126.

3. 4.8; 445 6. 0.003; 3

1, 000

9. 0.0099; 99

10, 000

12. 1,000% 15. 4,430% 18. 650% 21. 678% 24. 0.77% 27. 1.02%

3. <

6. >

9. =

12. >

15.

59,

172,

1138,

3 4

18. 16010, 61.5%, 0.65

21. 18, 18%, 0.81

1 2. Sample answer: 5 of 75 is 15.

4.

Sample

answer:

1 10

of

90

is

9.

6.

Sample

answer:

2 5

of

40

is

16.

8. Sample answer: 10% of 30 is 3.

10.

Sample

answer:

9 10

of

50

is

45.

12.

Sample

answer:

1 20

of

400

is

20.

14.

Sample

answer:

1 4

of

4

is

1.

16.

Sample

answer:

1 10

of

14

is

1.4.

18.

Sample

answer:

2 5

of

45

is

18.

Course 1 ? Chapter 2 Fractions, Decimals, and Percents

Lesson 2-7

1. 2 4. 5 7. 110 10. 0.375 13. 319.64 16. 56.475 19. 64.8

Lesson 2-8

1.

39

=

1500;

780

3.

6

=

12000;

30

5.

45

=

12050;

180

7.

62

=

15000;

124

9.

15

=

16000;

25

11.

66

=

17050;

88

13.

15

=

12000;

75

15.

6

=

17050;

8

2. 12 5. 150 8. 0.0685 11. 108.54 14. 3.5 17. 115 20. 17.28

2.

38

=

11090;

200

4.

21

=

13000;

70

6.

8

=

12050;

32

8.

90

=

13060;

250

10.

93

=

15000;

186

12.

9

=

11050;

60

14.

22

=

12050;

88

16.

31

=

12000;

155

3. 18 6. 3.289 9. 42 12. 47.3 15. 11.7 18. 6.4 21. 1.6

Course 1 ? Chapter 2 Fractions, Decimals, and Percents

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