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3.2

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Practice A

CA Standards NS 1.2

For use with pages 137–141

Match the expression with its solution. 1. 7.51  3.68

A. 11.02

2. 4.26  15.7

B. 11.19

3. 1.093  9.927

C. 11.44

4. 36.42  24.67

D. 11.75

Find the sum or difference. 5. 7.64  13.072

6. 3.112  0.249

7. 8.07  1.965

8. 0.45 (1.2)

9. 9.1 (2.637)

10. 13.64  1.364

11. 5.26  0.705

12. 36.2 (7.49)

13. 19.822  4.7

14. 1.68  8.2

15. 14.3 (5.9)

16. 0.88  0.204

In Exercises 17–20, use front-end estimation to estimate the sum. 18. 15.06  23.94  3.11  26.75

19. 19.37  2.08  24.09  33.66

20. 27.10  39.61  49.22  1.07

Lesson 3.2

17. 7.18  9.33  1.08  12.99

21. Your bill at a restaurant comes to a total of $13.95. You leave a $2.50 tip. How much money did you spend at the restaurant?

Copyright © by McDougal Littell, a division of Houghton Mifflin Company.

In Exercises 22–24, find the perimeter P of the figure. 22. P  a  b  c

23. P  w  w  l  l

24. P  s  s  s  s

l 5 15.1 in. a 5 4.3 ft

b 5 7.69 ft

s 5 7.31 ft

w 5 2.99 in.

c 5 6.4 ft

25. Describe and correct the error in the solution. 7.863 +13.1 799.4 26. For dinner you are making jambalaya. You need 3.5 pounds of chicken and 1.25 pounds of sausage. How many pounds of meat are you using in this dish?

California Math, Course 2 Chapter 3 Resource Book

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