1. Describe two ways to find -2.4 + 5.87 + (-2.87) + 6.5.
2.Draw and use a number line to show the sum of -4/5 and 3/5.
3.Use a number line to solve the problem in Exercise 3 (or the rules if you did it using a number line).
Find each sum or difference.
4. 7/9 - 8/9
5. -7/12 + 5/6
6. -69.5 - 83.3
7. -2/5 + 3/15 + 3/5
8. 4.57 + (-3.79)
Evaluate each expression.
9. a - (-5), if a = 0.75
10. 11/2 - b, if b = -5/2