Multiplying Rational Numbers

A bath tub drains at a constant rate. The amount of water changes by -0.75 gallons in one minute. What is the change in the amount of water in the bathtub after 5 minutes?

• -3.75 gallons

• 375 gallons

• -0.15 gallons

• -37.5 gallons

Tags

CCSS.7.NS.A.3

The amount of shore at a beach changes an average of -3/4 feet each year. What is the amount of shore after 7 years?

• 5 1/4

• 3/28

• -3/28

• -5 1/4

Tags

CCSS.7.NS.A.2A

Multiply. Write your answer in simplest form.

• 27/40
• -27/40
• 5/6
• -5/6

Tags

CCSS.7.NS.A.2A

Jeremiah finished $\frac{3}{4}$   of his timed math quiz. Of those he attempted, he correctly answered  $\frac{5}{9}$  of the problems. What fractional part of the quiz did he get correct?

• 5/12

• 7/13

• 2/3

• 8/13

Tags

CCSS.5.NF.B.6

Anna needs  $3\frac{2}{3}$ cups of sugar to bake one cake. She is baking 4 cakes for the school bake sale. How many cups of sugar does Anna need for the cakes?

•  $7\frac{2}{3}$  

•  $10\frac{2}{3}$  

•  $14\frac{2}{3}$  

•  $14\ \frac{1}{3}$  

Tags

CCSS.4.NF.B.4B

CCSS.4.NF.B.4C

It took Bryan one hour to ride  $6\ \frac{1}{4}$  miles on his bike. How far will Bryan be able to ride in  $3\ \frac{1}{2}$  hours?

•  $21\ \frac{7}{8}$  

•  $\frac{1}{2}$  

•  $5\ \frac{1}{8}$  

•  $9\ \frac{1}{4}$  

Tags

CCSS.7.EE.B.3

(2.5)(-1.2)

• -3.7

• 3.7

• 3

• -3

Tags

CCSS.7.NS.A.2A

• -32/9

• 6/45

• 32/9

• -6/45

Tags

CCSS.7.NS.A.2A

Convert to an improper fraction.

• 8/5
• 11/5
• 11/2
• 2/5

Tags

CCSS.6.NS.A.1

Knyla runs a mile in 7.50 minutes. Daisy takes 1.30 times as long to run a mile. How long does it take Daisy to run a mile?

• 6.20 minutes

• 9.75 minutes

• 97.5 minutes

• 975 minutes

Tags

CCSS.7.EE.B.3