Chapter 3: Multiply and Divide Fractions

Chapter 3: Multiply and Divide Fractions

Converting Mixed Numbers and Improper Fractions

Multiple Choice

 $\frac{35}{4}$  Convert to a mixed number. 

•  $8$   $\frac{3}{4}$  

• 8.5

•  $3$   $\frac{8}{4}$  

•  $3$   $\frac{5}{4}$  

Multiple Choice

 $\frac{32}{5}$  Convert to a mixed number

•  $2\frac{5}{6}$  

•  $5\frac{5}{6}$  

•  $6\frac{2}{5}$  

• 5

Multiple Choice

Convert into an improper fraction.

• 28/7
• 29/4
• 29/7
• 7/1

Multiple Choice

Change to an improper fraction.

• 1/15
• 15/15
• 16/15
• 2/15

Multiply Fractions

Numerator x Numerator

Denominator x Denominator

Put whole numbers over 1

Convert mixed to improper before multiplying

Multiple Choice

 $\frac{3}{4}$  x 12

• 3 $\frac{3}{4}$  

• 9

• 8

• 4 $\frac{1}{3}$  

Multiple Choice

 $\frac{1}{3\ }\times\ \frac{3}{5\ }=$  

•  $\frac{1}{5}$  

•  $\frac{3}{15}$  

•  $\frac{9}{15}$  

Multiple Choice

Find the product.

• 5 1/5

• 4 7/10

• 3 1/2

• 5 1/2

Dividing Fractions

Multiply by the reciprocal (keep, change, flip)

Must be a fraction divided by a fraction

Multiple Choice

What is the reciprocal of 3  $\frac{2}{5}$  

• 3  $\frac{5}{2}$  

•  $\frac{5}{6}$  

•  $\frac{17}{5}$  

•  $\frac{5}{17}$  

Multiple Choice

Find the reciprocal of 7

• 
  $\frac{1}{7}$

• $\frac{7}{1}$

• 1 $\frac{1}{7}$

• $\frac{7}{7}$

Multiple Choice

³⁄₄ ÷ ¹⁄₂ =

• 1 1/2

• ⁶⁄₈

• ³⁄₈

• ¹⁄₂

Multiple Choice

4 ÷ ½ = _

• 4
• 2
• 16
• 8

Multiple Choice

• 2  ¹/₅
• 2  ⁴/₁₅
• 6  ⁸/₁₅
•   1  ¹/₅

Word Problems

Pay attention to key words. Decide if something is being broken down, cut, or split into equal pieces (division) or if something is happening repeatedly.

Multiple Choice

Missy filled a water Jug with 12 gallons of water. The football team finished 2/3 of the water. How much of the water did the football team drink?

• 8 gallons

• 18 gallons

• 1/18 gallon

• 12 gallons

Multiple Choice

Paul had 10 pizzas. His family ate 7 of the pizza at the party. Paul cut the remaining pies into 1/4 pieces. How many 1/4 pieces did Paul cut?

• 3/4 pieces

• 2 1/2 pieces

• 12 pieces

• 1 3/4 pieces

Multiple Choice

Mrs. Mitole spent 8 hours in the kitchen. 3/4 of the time was spent making bread. For how many hours did Mrs. Mitole make bread?

• 6

• 2

• 3

• 18