Page 81 - MarceAlgebra Demystified

68 CHAPTER 4 Negative Numbers

Solutions

1: 28 30 ¼ 2

2: 88 100 ¼ 12

3: 25 110 ¼ 85

4: 4 75 ¼ 71

5: 5 90 ¼ 85

Finally, suppose you have gotten the first five problems incorrect. If you miss
the next three problems, you move even further away from zero; you would
now need to get five correct to bring the first five problems up to zero plus
another three correct to bring the next three problems up to zero. In other
words, you would need to get 8 more correct to bring your score up to zero:
5 3 ¼ 8. To subtract a positive number from a negative number, add
the two numbers. The sum will be negative.

Examples

30 15 ¼ 45 18 7 ¼ 25 500 81 ¼ 581

Practice

1: 16 4 ¼

2: 70 19 ¼

3: 35 5 ¼

4: 100 8 ¼

5: 99 1 ¼

Solutions

1: 16 4 ¼ 20