Page 159 - Basic College Mathematics with Early Integers

Vocabulary and Readiness Check

Multiple choice: Select the correct lettered response following each exercise.

1. It is true that a - b = .
a. b - a b. a + 1-b2 c. a + b
2. The opposite of n is .
a. -n b. -1-n2 c. n
3. To evaluate x - y for x =-10 and y =-14 , we replace x with -10 and y with -14 and evaluate .
a. 10 - 14 b. -10 - 14 c. -14 - 10 d. -10 - 1-142
4. The expression -5 - 10 equals .
a. 5 - 10 b. 5 + 10 c. -5 + 1-102 d. 10 - 5

Subtract.

5. 5 - 5 6. 7 - 7 7. 8642 - 8642 8. 9012 - 9012

FOR EXTRA HELP
2.4 Exercise Set

Objective Subtract. See Examples 1 through 7.

1. -5 - 1-52 2. -6 - 1-62 3. 8 - 3 4. 5 - 2 5. 3 - 8

6. 2 - 5 7. 7 - 1-72 8. 12 - 1-122 9. -5 - 1-82 10. -25 - 1-252

11. -14 - 4 12. -2 - 42 13. 2 - 16 14. 8 - 9 15. 22 - 55

16. 17 - 63 17. 362 - 1-402 18. 844 - 1-202 19. -4 - 10 20. -5 - 8

21. -7 - 1-32 22. -12 - 1-52 23. 16 - 23 24. 16 - 45

Solve. See Example 8.

25. Subtract 17 from -25. 26. Subtract 10 from -22. 27. Find the difference of -20 and
-3.
28. Find the difference of -8 and 29. Subtract -11 from 2. 30. Subtract -50 from -50.
-13.
Copyright 2012 Pearson Education, Inc.
Mixed Practice (Sections 2.3, 2.4) Add or subtract as indicated.

31. -21 + 1-172 32. -35 + 1-112 33. 9 - 20 34. 7 - 30

35. -49 - 78 36. -105 - 68 37. 48 - 59 38. 86 - 98

136