Unit 1 The Number System Review (7th)

Which expression has the same value as −3 + (−5)?

• −3 − (−5)

• −5 + (−3)

• −3 + 5

• −5 − (−3)

A diver’s elevation is −30 feet relative to sea level. She dives down 12 feet. What is her elevation after the dive?

• −30 feet

• −42 feet

• 18 feet

• 12 feet

Which number line models the expression −3 + 5?

• 
• 
• 
• 

Which number can you add to 5 to get a sum of 0?

• -5

• 0

• 5

• -10

The temperature in the morning was −3 °F. The temperature dropped 11 degrees by night. What was the temperature at night?

• −8 °F

• 8 °F

• −14 °F

• 14 °F

Which of the following expressions has the greatest value?

• 3 + 7 + (−10)

• 3 + 7 − (−10)

• 3 − 7 + (−10)

• 3 − 7 − (−10)

A diver is at an elevation of −18 feet relative to sea level. The diver descends to an undersea cave that is 4 times as far from the surface. What is the elevation of the cave?

• −72 feet

• −14 feet

• −22 feet

• −18 feet

The football team lost 4 yards on 2 plays in a row. Which of the following could represent the change in field position?

• −12 yards

• −6 yards

• −8 yards

• −2 yards

Clayton climbed down 50 meters. He climbed down in 10−meter intervals. In how many intervals did Clayton make his climb?

• 40

• 500

• 5

• 10

Which expression results in a negative answer?

• a negative number divided by a negative number

• a positive number divided by a negative number

• a negative number multiplied by a negative number

• a positive number multiplied by a positive number