Scientific Notation pages 402–404 Exercises 11. 3.25  10–3 22. 0.0048 ALGEBRA 1 LESSON 8-2 pages 402–404  Exercises 1. No; 55 > 10. 2. yes 3. No; 0.9 < 1. 4. yes 5. yes 6. No; 46 > 10. 7. 9.04  109 8. 2.0  10–2 9. 9.3  106 10. 2.17  104 11. 3.25  10–3 12. 8.003  106 13. 9.2  10–4 14. 1.56  10–2 15. 500 16. 0.05 17. 2040 18. 720,000 19. 0.897 20. 1.3 21. 0.0000274 22. 0.0048 23. 10–3, 10–1, 100, 101, 105 24. 6  10–10, 8  10–8, 9  10–7, 7  10–6 25. 0.52  10–3, 50.1  10–3, 4.8  10–1, 56  10–2 26. 5300  10–1, 5.3  105, 0.53  107, 530  108 27. C, A, B 28. 5.6  10–2 29. 2.4  1015 8-2

national debt is expressed in dollars, use standard Scientific Notation ALGEBRA 1 LESSON 8-2 30. 6.0  101 31. 3.18  10–3 32. 2.46  10–3 33. 3.4  105 34. 5400 35. 7  101 36. 1  101 37. 4.6  10–2 38. 0.0005 39. 3  10–26 43. 2.796  1010 instructions; 1.6776  1012 instructions 44. Answers may vary. Sample: Since the national debt is expressed in dollars, use standard notation, which most people will understand, rather than scientific notation, which is used mainly in science. 45. a. 5  1014 b. about 1.6  108 years 40. Answers may vary. Sample: Yes, if you regard the 1 in 1  105 as “understood” as happens when 1 is the coefficient of a term like x, then 105 is in scientific notation. 41. 48 million = 48  106. Write 48 in scientific notation; then add the powers of 10: 4.8  101  106 = 4.8  107. 48 millionths = 48  10–6. So 4.8  101  10–6 = 4.8  10–5. 42. about $1.65  1012 8-2

[1] minor computational error Scientific Notation ALGEBRA 1 LESSON 8-2 46. about 2.61  109 people 47. a. 6.08  1010 km3 b. 1.09  1012 km3 c. 9.17  1014 km3 53. 4 54. 3 55. 56. 57. 58. 59. 60. 2 3 64 49 48. 3.3  10–3 49. D 50. G 51. C 52. [2] (8  10–4)(1000) = 0.0008  1000 = 0.8; the diameter is 0.8 mm [1] minor computational error 1 9 8-2