Page 351 - Basic College Mathematics with Early Integers

Vocabulary and Readiness Check

Answer each exercise “true” or “false.”

1. The number 0.5 means 0.555.
9
2. To write as a decimal, perform the division 199.
19
3. (-1.2) 2 means (-1.2)(-1.2) or -1.44 .
4. To simplify 8.6(4.8 - 9.6) , we first subtract.

4.5 Exercise Set FOR EXTRA HELP

Objective Write each number as a decimal. See Examples 1 through 7.

1 1 17 13 3
1. 2. 3. 4. 5.
5 20 25 25 4

1 2 3 9 8
6. 7. - 8. - 9. 10.
8 25 25 4 5

11 5 17 19 9
11. 12. 13. 14. 15.
12 12 40 25 20

31 1 7 7 9
16. 17. - 18. - 19. 20.
40 3 9 16 16

7 9 17 7 78 159
21. 22. 23. 5 24. 4 25. 26.
11 11 20 8 125 375

Round each number as indicated. See Example 4.

27. Round your decimal answer to Exercise 17 to the 28. Round your decimal answer to Exercise 18 to the
nearest hundredth. nearest hundredth.

29. Round your decimal answer to Exercise 19 to the 30. Round your decimal answer to Exercise 20 to the
nearest hundredth. nearest hundredth.

31. Round your decimal answer to Exercise 21 to the 32. Round your decimal answer to Exercise 22 to the
nearest tenth. nearest tenth.

Write each fraction as a decimal. If necessary, round to the nearest hundredth. See Examples 1 through 7.
21
33. Of the U.S. mountains that are over 14,000 feet in 34. About of all blood donors have type A blood.
50 Copyright 2012 Pearson Education, Inc. Copyright 2012 Pearson Education, Inc.
56
elevation, are located in Colorado. (Source: U.S. (Source: American Red Cross Biomedical Services)
91
Geological Survey)

328