Multiplying and Dividing Fractions Review

Multiply & Divide Fractions CW Review

by Cynthia Huang

How will this lesson be graded? (You can redo the classwork as much as needed to earn a higher grade.)

• 90% - 100% accuracy = 4 pts

• 80% - 89% accuracy = 3 pts

• ​70% - 79% accuracy = 2 pts

• 60% - 69% accuracy = 1 pts

• below 60% = 0.5 pts

​Before you multiply or divide, you need to change Mixed Numbers into Improper Fractions

Multiple Choice

Convert $$1\frac{\text{3}}{\text{5}}$$  to an improper fraction.

• $$\frac{8}{5\ }$$  

• $$\frac{9}{5}$$  

• $$\frac{6}{3}$$  

• $$\frac{15}{5}$$  

Multiple Choice

5. The improper fraction of this mixed fraction is ...

• 6/5

• 11/5

• 26/5

• 5/5

Multiple Choice

6. The improper fraction of this mixed fraction is ...

• 26/7

• 10/7

• 8/7

• 15/7

To multiply fractions, multiply the numerators together (top x top), and multiply the denominators together (bottom x bottom)

Multiple Choice

Multiply and write in simplest form.

• 2/10
• 1 / 5

• 5 / 30
• 0

Multiple Choice

Multiply.

• 3  1/10
• 85/20
• 4  5/20
• 4  1/4

Multiple Choice

What is 2 ³/₄ × 4 IN SIMPLEST FORM?

• 11
• 8³/₄
• 8 ¹/₃
• ⁴⁴/₄

To divide fractions, multiply by the reciprocal of the SECOND fraction,

Multiple Choice

What is the reciprocal of $$\frac{7}{8}$$  ?

• 1

• $$\frac{14}{16}$$  

• $$\frac{8}{7}$$

• $$\frac{7}{8}$$

Multiple Choice

What is the recriprocal of 4/5

• 4/5

• 5/4

• 5/1

• 1/5

Multiple Choice

One Step Equations with Fractions (Multiplying):

So we do not need an LCD for a multiplication one-step equation. 
How do we solve this equation?

• Multiply by the Recipricol on Both Sides
• Add 3/5 to both sides
• Subtract 3/5 to both sides
• Add the Recipricol on Both Sides

Multiple Choice

Solve. $$\frac{2}{9}\div\frac{5}{11}$$  

• $$\frac{10}{99}$$  

• $$\frac{22}{45}$$  

• $$\frac{58}{73}$$  

• $$\frac{37}{64}$$  

Multiple Choice

2/3 X = 7/8

• 1 5/16

• 5 5/16

• 16

• 12

Multiple Choice

• 2  2/27
• 21/2
• 1/2
• $$\frac{8}{3}$$  

Multiple Choice

Solve and Simplify:

y ÷ ⅓ = ¾

• ⅔

• ¼

• ⅜

• ⅓

Multiple Choice

Solve the equation. Check your solution.

• -90
• 90
• -40
• -180

Multiple Choice

Cecilie has $$5\ \frac{2}{3}$$  pounds of candy to use to make Halloween goody bags for her classmates. If she puts  $$\frac{2}{9}$$  of a pound of candy into each goody bag, how many goody bags can she make?

• 21

• 56

• 25

• $$x=6$$