Units 1-8 Review

Does the following situation describe opposite quantities combining to make zero? Explain. Tanya makes 2 cups of cleaning solution and puts it into a spray bottle. She uses all the solution to clean her house.

• Yes, because the amount of cleaning solution in the bottle after Tanya uses the solution is not the same as before Tanya makes the solution.

• Yes, because the amount of cleaning solution in the bottle after Tanya uses the solution is the same as before Tanya makes the solution.

• No, because the amount of cleaning solution in the bottle after Tanya uses the solution is more than before Tanya makes the solution.

• No, because the amount of cleaning solution in the bottle after Tanya uses the solution is less than before Tanya makes the solution.

What is the location of the sum 11 + (−5) with respect to 11 on a number line?

• 5 units in the negative direction

• 5 units in the positive direction

• 11 units in the negative direction

• 11 units in the positive direction

Precious spends $4 on a magazine at a newsstand. When leaving the newsstand, she finds a quarter on the sidewalk. How much money does Precious have now compared to when she first arrived at the newsstand?

• Precious has $4.25 less than when she first arrived at the newsstand.

• Precious has $3.75 less than when she first arrived at the newsstand.

• Precious has $3.75 more than when she first arrived at the newsstand.

• Precious has $4.25 more than when she first arrived at the newsstand.

Which sum does the number line represent?

• −11 + (−9)

• −11 + 9

• −11 + (−2)

• −11 + (2)

Which of the following expressions results in the distance between −5 and 6 on a number line?

• |6 − 5|

• |6 − (−5)|

• |−5| − |6|

• |5 − 6|

Which statement is true?

• 8 ÷ (−2) = 4

• −20 ÷ 4 = 5

• −14 ÷ (−7) = −2

• 15 ÷ (−5) = −3

Which is an example of the Commutative Property of Multiplication?

• 1 + 7 = 7 + 1

• (2 × 4) × 5 = 5 × (4 × 2)

• 12 × 1 = 12

• 4 × 8 = 8 × 4

• 0.25

• −0.25

• Additive inverse property

• Additive identity property

• Associative property of addition

• Commutative property of addition