basic math

jimmy has 5 apples and beth has 8 apples how many apples do they have together The word together means we add: Total Apples = Jimmy's apples + Beth's apples Total Apples = 5 + 8 Total Apples = 13

Jane did this calculation a. Add -12 b.subtract -9 c. Add 8 d. Subtract -2 the result is -5. What was the original number? Let the original number be n. Add -12: n - 12 Subtract -9: n - 12 - -9 = n - 12 + 9 Add 8: n - 12 + 9 + 8 Subtract - 2: n - 12 + 9 + 8 - -2 = n - 12 + 9 + 8 + 2 The result...

If a=-9 and b=-6, show that (a-b) unequal (b-a) a - b: a - b = -9 - -6 a - b = -9 + 6 a - b = -3 b - a: b - a = -6 - -9 b - a = -6 + 9 b - a = 3 Since -3 <> 3, then a - b <> b - a

An electrician starts off the day with 600 feet of copper wiring on his truck. During the course of the day he uses pieces 100, 82, 25, and 40 feet long. The next day, he purchases another 400 feet and puts it on his truck and later in the day uses pieces of 41, 39, and 44 feet long. How many...