Section 2.4 Multiplication of Fractions and Applications 129 Concept 1: Multiplication of Fractions 7. Shade the portion of the figure 8. Shade the portion of the figure that that represents of represents of 9. Shade the portion of the figure 10. Shade the portion of the figure that represents of that represents of 11. Find of . 12. Find of . 13. Find of 8. 14. Find of 20. For Exercises 15–26, multiply the fractions. Write the answer as a fraction. (See Example 1.) 15. 16. 17. 18. a b 12 7 a b 9 10 8 a b 1 19. 20. 21. 22. 23. 24. 25. 26. For Exercises 27–50, multiply the fractions and simplify to lowest terms. Write the answer as a fraction or whole number. (See Examples 2–4.) 27. 28. 29. 30. 31. 32. 33. 34. a b 6 11 a b 12 45 a b 17 9 35. 36. 37. 38. 39. 40. 41. 42. 43. 44. 45. 46. 47. 48. 49. 50. Concept 2: Fractions and the Order of Operations For Exercises 51–54, simplify the powers of 6 4 3 51. 52. 53. 54. a 1 10 9 b a 1 10 b a 1 10 b a 1 10 b 1 10 . 38 22 11 5 19 100 49 21 14 25 11 18 2 20 15 7 10 3 28 5 55 9 18 32 24 11 5 2 10 21 7 5 49 8 4 5 20 7 9 15 16 3 25 8 4 8 92 12 15 42 85 6 12 10 21 4 16 7 a39 11 b a11 13 b a72 17 b a5 4 b a22 15 b 49 24 6 7 24 15 5 3 16 25 15 32 21 5 25 12 7 12 18 5 5 6 3 4 1 8 4 7 2 9 3 5 6 5 7 5 13 9 5 4 5 8 5 4 5 6 3 a2 7 11 b a7 4 b a2 5 b 1 8 9 8 14 9 1 9 2 3 1 3 1 2 3 8 25 3 4 1 5 2 3 1 4 1 2 1 4. 13 1 4. 14 1 2. 12 1 2. 16
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