Page 278 - Basic College Mathematics with Early Integers

S E C T I O N 3.7 I OPERATIONS ON MIXED NUMBERS 255

Subtract. For Exercises 39 through 42, find an exact difference and an estimated difference. See Examples 12 through 14.

7 4 13 5 1
39. 4 40. 7 41. 10 42. 12 43. 9
10 9 14 12 5
1 2 4 1 6
-2 -3 - 3 - 4 -8
10 9 7 6 25
Exact: Exact: Exact: Exact:

Estimate: Estimate: Estimate: Estimate:

2 1 2
44. 5 45. 6 46. 8 47. 63 48. 86
13 6 15
4 7
7 -2 -1 5 3
-4 9 10 -47 -27
26 12 10

Objectives Mixed Practice Perform each indicated operation. See Examples 2 through 14.

3 5 4 8
49. 2 50. 5 51. 15 52. 23
4 8 7 15
1 3 11 3
+1 +2 -9 -8
4 8 14 5

1 1 2 1 1 1
53. 3 # 2 54. 4 # 3 55. 1 , 2 56. 5 , 3
9 2 3 5 5 4

4 5 3 2 2 1 3 3
57. 22 + 13 58. 15 + 5 59. 5 - 3 60. 5 - 2
9 18 25 5 3 6 8 16

4 7 4 11 5 19
61. 15 62. 3 63. 6 - 5 64. 47 - 23
5 16 7 14 12 24
3 1
20 6
10 2
2 3
+37 +9
15 8

2 3 2 3 2 3
65. 4 # 1 66. 6 # 2 67. 6 68. 7
7 10 3 4 11 7
3 15
10 1
+4 +20
33 2