NAME DATE PERIOD Lesson 1 Skills Practice

[Pages:8]NAME _____________________________________________ DATE __________________ PERIOD _________

Lesson 1 Skills Practice

Add and Subtract Decimals

Find each sum or difference.

1. 9.868 + 6.329

2. 0.87 + 6.12

3. 4.672 + 15.31

4. 4.609 + 2.81

5. 5.8 + 4.289

6. 1.09 + 0.65

7. 43.68 - 40.67

8. 9 - 5.2

9. 7 - 4.29

10. 38.94 - 8.25

11. 20.1 - 16.37

12. 9.8 - 3.24

13. Gasoline prices are given to the nearest thousandth of a dollar. If a gallon of gasoline costs $3.499 and increases $0.09, what is the price of gasoline after the increase?

14. The area of Max's room, not including his closet, is 235.675 square feet. The area of his closet is 10.45 square feet. What is the area of his room, including the closet?

Copyright ? The McGraw-Hill Companies, Inc. Permission is granted to reproduce for classroom use.

36

Course 1 ? Chapter 3 Compute with Multi-Digit Numbers

NAME _____________________________________________ DATE __________________ PERIOD _________

Lesson 2 Skills Practice

Estimate Products

Estimate each product. 1. 2.8 ? 7.9

2. 72.1 ? 49.7

3. 21.2 ? 14

4. 3.8 ? 11

5. 53.4 ? 8.1

6. 15.7 ? 6.2

7. 36.3 ? 4

8. 88.5 ? 3

9. 43.9 ? 5.6

Copyright ? The McGraw-Hill Companies, Inc. Permission is granted to reproduce for classroom use.

10. 18.4 ? 2.7

11. 25.8 ? 6.5

12. 61.2 ? 7

Use estimation to determine whether each answer is reasonable. If the answer is reasonable, write yes. If not, write no and provide a reasonable estimate.

13. 1,109 ? 71 = 77,700

14. 42.9 ? 101 = 4,300

38

Course 1 ? Chapter 3 Compute with Multi-Digit Numbers

NAME _____________________________________________ DATE __________________ PERIOD _________

Lesson 3 Skills Practice

Multiply Decimals by Whole Numbers

Multiply.

1. 1.5 ? 3

2. 0.9 ? 6

3. 0.45 ? 5

4. 3.12 ? 8

5. 3.47 ? 5

6. 2.08 ? 6

7. 9.14 ? 2

8. 0.82 ? 9

9. 6.3 ? 9

10. 0.02 ? 3

11. 9.12 ? 4

12. 27.3 ? 8

13. 4.007 ? 4

14. 3.13 ? 3

15. 5.02 ? 8

16. 6.31 ? 6

17. 8.01 ? 5

18. 4.325 ? 7

19. 0.762 ? 2

20. 0.08 ? 8

21. 6 ? 3.04 23. 13 ? 2.5

22. 2.6 ? 9 24. 1.006 ? 4

Copyright ? The McGraw-Hill Companies, Inc. Permission is granted to reproduce for classroom use.

40

Course 1 ? Chapter 3 Compute with Multi-Digit Numbers

NAME _____________________________________________ DATE __________________ PERIOD _________

Lesson 4 Skills Practice

Multiply Decimals by Decimals

Multiply. 1. 0.3 ? 0.5

2. 1.2 ? 2.1

3. 2.5 ? 6.7

4. 0.4 ? 8.3

5. 2.3 ? 1.21

6. 0.6 ? 0.91

7. 6.5 ? 0.04

8. 8.54 ? 3.27

9. 5.02 ? 1.07

10. 0.003 ? 2.9

11. 0.93 ? 6.8

12. 7.1 ? 0.004

13. 3.007 ? 6.1

14. 2.52 ? 0.15

15. 2.6 ? 5.46

16. 16.25 ? 1.3

17. 3.5 ? 24.09

18. 0.025 ? 17.1

19. 11.04 ? 6.18

20. 14.83 ? 16.7

21. 27.1 ? 10.15

22. 41.2 ? 10.34

Copyright ? The McGraw-Hill Companies, Inc. Permission is granted to reproduce for classroom use.

42

Course 1 ? Chapter 3 Compute with Multi-Digit Numbers

NAME _____________________________________________ DATE __________________ PERIOD _________

Lesson 5 Skills Practice

Divide Multi-Digit Numbers

Find each quotient. 1. 940 ? 58

2. 861 ? 78

3. 891 ? 6

4. 390 ? 21

5. 539 ? 47

6. 975 ? 8

7. 324 ? 9

8. 9,395 ? 87

9. 3,409 ? 14

10. 4,532 ? 51

11. 628 ? 27

12. 829 ? 44

Copyright ? The McGraw-Hill Companies, Inc. Permission is granted to reproduce for classroom use.

46

Course 1 ? Chapter 3 Compute with Multi-Digit Numbers

NAME _____________________________________________ DATE __________________ PERIOD _________

Lesson 6 Skills Practice

Estimate Quotients

Estimate each quotient. 1. 7.9 ? 2.8

2. 11.6 ? 3.1

3. 18.4 ? 6.1

4. 88.3 ? 11.4

5. 37.4 ? 9.1

6. 58.4 ? 7.9

7. 27.3 ? 8.7

8. 64.1 ? 9.4

9. 42.1 ? 6.1

Copyright ? The McGraw-Hill Companies, Inc. Permission is granted to reproduce for classroom use.

10. 19.4 ? 4.2

11. 98.7 ? 11.3

12. 369.1 ? 6.2

Use estimation to determine whether each answer is reasonable. If the answer is reasonable, write yes. If not, write no and provide a reasonable estimate.

13. 37.4 ? 18.8 = 4

14. 126.2 ? 25.9 = 5

15. 103.8 ? 7.7 = 13.5

16. 26.8 ? 3.2 = 6

48

Course 1 ? Chapter 3 Compute with Multi-Digit Numbers

NAME _____________________________________________ DATE __________________ PERIOD _________

Lesson 7 Skills Practice

Divide Decimals by Whole Numbers

Divide. Round to the nearest tenth if necessary.

1. 9.6 ? 3

2. 5.15 ? 5

3. 16.08 ? 2

4. 24.64 ? 7

5. 132.22 ? 11

6. 142.4 ? 16

7. 79.2 ? 9

8. 47.4 ? 15

9. 217.14 ? 21

10. 34.65 ? 5

11. 20.72 ? 8

12. 72.6 ? 10

13. 57.48 ? 15

14. 264.5 ? 25

15. 317.59 ? 34

16. 122.32 ? 11

17. 42.48 ? 18

18. 323.31 ? 24

Copyright ? The McGraw-Hill Companies, Inc. Permission is granted to reproduce for classroom use.

50

Course 1 ? Chapter 3 Compute with Multi-Digit Numbers

NAME _____________________________________________ DATE __________________ PERIOD _________

Lesson 8 Skills Practice

Divide Decimals by Decimals

Divide. 1. 4.86 ? 0.2

2. 2.52 ? 0.7

3. 14.4 ? 1.2

4. 17.1 ? 3.8

5. 3.96 ? 1.32

6. 628.2 ? 34.9

7. 0.105 ? 0.5

8. 1.296 ? 0.16

9. 3.825 ? 2.5

10. 8.253 ? 0.5

11. 0.9944 ? 0.8

12. 1.638 ? 0.35

13. 13.59 ? 0.75

14. 4.4208 ? 1.8

15. 16.16 ? 0.2

16. 158.1 ? 5.1

17. 247.5 ? 3.3

18. 0.132 ? 1.1

Copyright ? The McGraw-Hill Companies, Inc. Permission is granted to reproduce for classroom use.

52

Course 1 ? Chapter 3 Compute with Multi-Digit Numbers

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