Multiplication and Division Study Guide

The outside air temperature is recorded as 20 degrees Celsius. Which situation would

bring the temperature to 0 degrees Celsius?

• The temperature decreases by 0 degrees.

• The temperature decreases by 20 degrees.

• The temperature increases by 0 degrees.

• The temperature increases by 20 degrees.

Tags

CCSS.6.NS.C.5

What mathematical expression is illustrated by the number line?

Tags

CCSS.7.NS.A.1B

While Bailey was surfing, she rose 27 feet above the water as she rode a wave. Within

seconds she fell 45 feet and hit the ocean floor. How deep was the ocean where Bailey was

surfing?

• 27 feet deep

• 18 feet deep

• 72 feet deep

• 45 feet deep

Tags

CCSS.7.NS.A.1C

Tags

CCSS.7.NS.A.2C

• A 120-pound sand bag is divided into six 20-pound bags.

• A hole is drilled at a rate of 120 feet per hour for 6 hours.

• Six players on a team each lose 120 points for a total loss of 20 points.

• A $120 debt is divided into 6 equal payments of - $20 each.

Tags

CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

A submarine dives from the surface of the water at a rate of –2.0 meters per second.

Which of the following best describes the meaning of the equation –2.0(18) = –36 as it

relates to this situation?

• After 18 seconds, the submarine has traveled a total horizontal distance of 36

  meters.

• After 36 seconds, the submarine has traveled a total horizontal distance of 18

  meters.

• After 18 seconds, the depth of the submarine is 36 meters below the surface.

• After 36 seconds, the depth of the submarine is 18 meters below the surface.

Jack has a school lunch account. Each time he buys lunch, the balance of his account

changes by –$3.50. Which of the following best describes the meaning of the product

(5)(–3.50) = –17.50?

• After 5 days, Jack's account has lost $3.50.

• After 5 days, Jack's account has gained $17.50.

• After 5 days, Jack's account has gained $3.50.

• After 5 days, Jack's account has lost $17.50.

Tags

CCSS.7.EE.B.3

A scuba diver descends 35 meters in 7 minutes at a constant rate. Which expression

represents the diver's rate of change in depth?

Tags

CCSS.8.F.B.4

CCSS.HSF.IF.B.6

Which of the following contexts could describe the product 3 · (–7)?

• The temperature dropped 3 degrees 7 times.

• The temperature dropped 7 degrees 3 times.

• The temperature increased 3 degrees 7 times.

• The temperature increased 7 degrees 3 times.

Tags

CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

Which does NOT represent a RATIONAL number?