8.5 Exercises
Guided Practice
Vocabulary Check
Skill Check
1. Is the number 12.38 102 in scientific notation? Explain.
Write the number in decimal form.
2. 9 104
3. 4.3 102
4. 8.11 103
5. 5 102
6. 9.4 105
7. 2.45 101
Write the number in scientific notation.
8. 15
11. 0.99
9. 6,900,000
12. 0.0003
10. 39.6
13. 0.0205
Perform the indicated operation. Write the result in scientific notation.
1.4 103
14. (5 106)(6 102) 15. 7 107
16. (9 109)2
Practice and Applications
MOVING DECIMALS Tell whether you would move the decimal left or
right and how many places to write the number in decimal form.
17. 1.5 102
18. 6.89 105
19. 9.04 107
DECIMAL FORM Write the number in decimal form.
20. 5 105
21. 8 103
22. 1 106
23. 2.1 104
24. 7.75 100
25. 4.33 108
26. 3 104
27. 9 103
28. 4 105
29. 9.8 102
30. 6.02 106
31. 1.1 1010
LOGICAL REASONING Decide whether the number is in scientific
notation. If not, write the number in scientific notation.
32. 0.7 102
Student Help
Example 1: Exs. 17–31
Example 2: Exs. 32–46
Example 3: Exs. 47–55
Example 4: Exs. 56–61
Example 5: Exs. 62–69
Chapter 8
34. 10 103
SCIENTIFIC NOTATION Write the number in scientific notation.
HOMEWORK HELP
472
33. 2.9 105
35. 900
36. 700,000,000
37. 88,000,000
38. 1012
39. 95.2
40. 370.2
41. 0.1
42. 0.05
43. 0.000006
44. 0.0422
45. 0.0085
46. 0.000459
Exponents and Exponential Functions