Unit 7 Review (Multiplying and Dividing Fractions)

Unit 7 Review (Multiplying and Dividing Fractions)

5.3i, 5.3j, 5.3l

Multiplying Fractions with Whole Numbers

• Step #1: Change both factors to fractions.

• Step #2: Multiply numerators together and denominators together.

• Step #3: Simplify if needed.

Multiple Choice

Which model below correctly shows 3 x 3/4?

Multiple Choice

Which equation matches the model shown above?

(answers are simplified!)

• 5/7 x 5 = 3 4/5

• 5 x 5/7 = 3 4/7

• 5 x 7 = 35

• 2/7 x 5 = 1 3/7

Multiple Choice

Tim has 32 songs on his ipod. Three-eighths of those songs are by Bob Marley. How many Bob Marley songs does Tim have on his ipod?

• 12 songs

• 15 songs

• 9 songs

• 18 songs

Multiple Choice

The art club has 60 members.   $\frac{2}{3}$  of the members are girls and the rest are boys.  How many of the art club members are boys?

• 40

• 20

• 120

• 30

Multiple Choice

If you multiply a whole number by a fraction the answer is always...(Think about what a fraction does to a number)

• greater than the whole number

• less than the whole number

• equal to the whole number

Dividing Whole Numbers by Unit Fractions (KCF!!!)

• When the whole number comes first in the equation - your answer will be a whole number!

• Make sure you understand what is being split up or shared in word problems, this will be your first number in the equation.

Multiple Choice

Phoebe has four bags of cat food. If she feeds her cat 1/5 bag each day, how many days will Phoebe be able to feed her cat?

• 9 days

• 10 days

• 20 days

• Stop the madness days!

Multiple Choice

Which expression is represented by the model?

• 2 ÷ 1/3

• 1/3 ÷ 2

• 2 ÷ 3

• 2 ÷ 1/6

Multiple Choice

Which equation has a quotient of 12?

• 1/2 ÷ 6

• 1/4 ÷ 3

• 3 ÷ 1/4

• 2 ÷ 1/5

Multiple Choice

6 ÷ 1/4

• 1/10

• 1/24

• 24

• 6/4

Dividing Unit Fractions by Whole Numbers (KCF!!!)

• When the fraction comes first in the equation - your answer will be a fraction!

• Make sure you understand what is being split up or shared in word problems, this will be your first number in the equation.

Multiple Choice

There is 1/3 of a pan of brownies left. Four children are going to share it equally. What fraction of the whole pan of brownies will each child get?

• 7

• 1/12

• 1/7

• 12

Multiple Choice

A fraction divided by a whole number will always be a fraction.

• True

• False

Multiple Choice

1/6 ÷ 3 =

• 18

• 1/18

• 16

• 1/16

Multiple Choice

A pet store had 9 cats to feed. If they only had one-fourth of a bag of cat food and each cat got the same amount, what fraction of the bag would each cat get?

• 36

• 1/5

• 1/32

• 1/36