Andy is strapped to a hang glider and jumps from the edge of the Grand Canyon (ground level). He initially drops 4 feet, then catches an air current a...

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c. 3 + 7 + (−10)

b. 3 − 7 − (−10)

d. 3 − 7 + (−10)

2. You want to simplify the expression below. 4.5 +(-4.5 + 2.6) You feel you can simplify this more easily by using the associative property. How can your expression be written using the associative property? a. (-4.5 + 2.6) + 4.5

c. (-4.5) + (2.6+ 4.5)

b. (4.5 + -4.5) +2.6

d. 4.5 + (2.6 +-4.5)

3. Amanda is making chocolate chip cookies. She needs to add 3 12 cups of chocolate chips. Amanda accidently poured 4 14 cups of chips into the measuring cup. How much will she need to remove?

4. Douglas had a balance of -$51.75 in his checking account. After depositing his graduation money, he now has a balance of $150.75. The overall change in his account is

.

5. Andy is strapped to a hang glider and jumps from the edge of the Grand Canyon (ground level). He initially drops 4 feet, then catches an air current and rises 12.75 feet. He suddenly drops an additional 7 feet then levels off. Andy’s final position relative to the ground level is

feet.

6. You put your extra coins in your piggy bank each day. You also take coins out as you need them. Below is a chart which shows this past week’s change in the amount of money in your piggy bank. How much did the amount of money in your piggy bank change from Monday to Friday? Monday Tuesday Wednesday Thursday Friday

You deposited $1.37 You withdrew $2.45 You neither withdrew nor added change. You deposited $0.56 You deposited $0.52

7. You are given the expression below.

5 9

−

3 5

−

2 9

Part A Rewrite the expression above, using the commutative property, to make it easier to simplify. Part B Simplify your expression in Part A. Show or explain how you got your answer.