Unit 1 Review

ADDITIVE INVERSE

A bottle nose dolphin is at -12.5 feet in the water. Which of these situations would bring the dolphin to 0 feet?

• Swimming toward the surface a distance of 12.5 feet.

• Diving a distance of 12.5 feet.

• Swimming toward the surface a distance of 19 feet

• Diving a distance of 19 feet.

Tags

CCSS.7.NS.A.1B

ADDITIVE INVERSE

Temperatures vary. They may rise above zero degrees or drop below zero degrees. Which situation could be used to model the sum of a rational number and its additive inverse with temperature changes?

• A rise to 20 degrees, then a drop of 40 degrees

• A rise to 40 degrees, then a drop of 40 degrees.

• A rise to 30 degrees, then a drop of 40 degrees.

• A rise to 10 degrees, then a drop of 40 degrees.

Tags

CCSS.7.NS.A.1B

ADDITION

Sam has $40 in his wallet. He buys dinner for $17. Which expression represents this situation?

• -40 + (-17)

• 40 + (-17)

• -40 + 17

• 40 + 17

Tags

CCSS.7.NS.A.1C

SUBTRACTION

Which of the following is equal to

43 - 62?

• 62 - 43

• 43 + (-62)

• (-43) + 62

• 43 - (-62)

Tags

CCSS.7.NS.A.1B

SUBTRACTION

What is the distance from -3 to 9 on a number line?

• -12

• 6

• -6

• 12

Tags

CCSS.7.NS.A.1C

MULTIPLICATION

A submarine dives 8 feet per minute for 10 minutes. Which expression represents this situation?

• 

   $10\div8$  

•  $10\div\left(-8\right)$  

•  $10\left(8\right)$  

•  $10\left(-8\right)$  

Tags

CCSS.7.EE.B.3

DIVISION

 $\left(-18\right)\div6$  

• 3

• -3

• 12

• -12

Tags

CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

• Jim

• Sam

• Both

• Neither

Tags

CCSS.7.NS.A.1C

A turtle dives toward deeper water at a rate of 7 inches per second. It continues for a total of 12 seconds. Which expression represents the situation?

• 12(-7)

• -12(7)

• -12(-7)

Tags

CCSS.7.EE.B.3

Distribute to solve.

-8(x - 2) = ?

• -8x+16

• -8x-16

• -8x+2

• -8x-2

Tags

CCSS.6.EE.A.3