Page 170 - Basic College Mathematics with Early Integers

S E C T I O N 2.5 I MULTIPLYING AND DIVIDING INTEGERS 147

Objectives Mixed Practice Multiply or divide as indicated.

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39. -12102 40. 01-1002 41. -4132 42. -6 2

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43. -9 6 44. -121132 45. -71-62 46. -91-52

47. -31-421-22 48. -71-521-32 49. 1-42 2 50. 1-52 2

10 25 56 49
51. - 52. - 53. - 54. -
5 5 8 7

55. -12 , 3 56. -15 , 3 57. 41-421-32 58. 61-521-22

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# #
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59. -301621-221-32 60. -20 5 1-52 1-32 61. 3 1-22 0 62. -5142102
100 45
63. 64. 65. 240 , 1-402 66. 480 , 1-82
-20 -9

-12 -36
67. 68. 69. -1 4 70. -2 3
-4 -3

5 2
71. 1-32 72. 1-92 73. -21321521-62 74. -11221721-32

32 33
75. 1-12 76. 1-12 77. -21-221-52 78. -21-221-321-22

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79. -42 23 80. -56 43 81. 25 1-822 82. 70 1-232
Objective Evaluate ab for the given replacement values. See Example 15.

83. a =-4 and b = 7 84. a = 5 and b =-1 85. a = 9 and b =-2

86. a =-9 and b =-6 87. a =-5 and b =-5 88. a =-8 and b = 8

x
Evaluate for the given replacement values. See Example 16.
y
89. x = 5 and y =-5 90. x = 9 and y =-3 91. x =-12 and y = 0

92. x =-10 and y =-10 93. x =-36 and y =-6 94. x = 0 and y =-5

x
Evaluate xy and also for the given replacement values.
y
95. x =-4 and y =-2 96. x = 20 and y =-5 97. x = 0 and y =-6 98. x =-3 and y = 0