8.1 practice
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This document contains a practice worksheet with 72 math problems involving operations with zero and negative exponents, simplifying expressions, and evaluating expressions for given values of variables. The problems cover simplifying expressions, writing numbers as powers of 10 using negative exponents, converting expressions to decimals, and evaluating expressions when given specific values for variables.
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8.1 practice
- 1. Name Class. Date Practice 8–1 Zero and Negative Exponents Simplify each expression. 1. 160 2. 4 –2 3. 3 –3 4. 8–4 5. 6. 7. 8. 9. 3 • 80 10. 16 • 2–2 11. 12–1 12. –7–2 13. 16 • 40 14. 90 15. 16.
- 2. 17. 18. 19. 5(–6)0 20. (3.7)0 21. (–9)–2 22. (–4.9)0 23. –6 • 3–4 24. Evaluate each expression for a = —2 and b = 6. 25. b –2 26. a –3 27. (–a)–4 28. –b–3 29. 4a–3 30. 2b–2 31. (3a)–2 32. (–b)–2
- 3. 33. 2a –1 b–2 34. –4a-2 b –3 35. 3 –2 a –2 b–1 36. (3ab)–2 Simplify each expression. 37. x –8 38. xy–3 39. a–5 b 40. m 2 n –9 41. 42. 43. 44. 45. 3x –6 y –5 46. 8a –3 b2 c –2 47. 15s–9 t –1 48. –7p–5 q–3 r2 49. 50. 51. 52.
- 4. Write each number as a power of 10 using negative exponents. 53. 54. 55. 56. Write each expression as a decimal. 57. 10-5 58. 10–8 59. 4 • 10-1 60. 6 • 10-4 Evaluate each expression for m = 4, n = 5, and p = —2. 61. mp 62. nm 63. pp 64. np 65. mp n 66. m –n 67. p –n 68. mnp 69. p–m 70. 71. 72. –n-m