Multiplying Fractions Review

Bryant - Review Multiplying/Dividing Fractions/Mixed #

Multiple Choice

Simplify.

$$\frac{9}{14}\cdot\frac{2}{3}$$  

• $$\frac{27}{28}$$  

• $$\frac{18}{42}$$  

• $$\frac{3}{7}$$  

• $$\frac{9}{21}$$  

Multiple Choice

Simplify.

$$6\frac{2}{5}\cdot3\frac{1}{8}$$  

• 20

• $$\frac{800}{40}$$  

• $$\frac{80}{4}$$  

• $$\frac{125}{256}$$  

Multiple Choice

Simplify.

$$\frac{15}{28}\div\frac{3}{7}$$  

• $$\frac{45}{196}$$  

• $$\frac{5}{4}$$  

• $$\frac{105}{84}$$  

• $$\frac{35}{28}$$  

Multiple Choice

Simplify.

$$4\frac{7}{12}\div2\frac{3}{4}$$  

• $$\frac{605}{48}$$  

• $$\frac{5}{3}$$  

• $$\frac{220}{132}$$  

• $$\frac{48}{605}$$  

Fill in the Blanks

What is the reciprocal of

$\frac{4}{7}?$  

Multiple Select

Which numbers are common factors of 24 and 56?

• 6

• 4

• 8

• 3

• 12

Explanation.

• Correct answer.
   $4\cdot6=24\ and\ 4\cdot14=56$  
  

• Correct answer.                                              $3\cdot8=24\ and\ 7\cdot8=56$  

•  $\ \$  

Explanation

• Wrong answers.

   $4\cdot6=24,\ but\ 6\cdot9=54\ and\ 6\cdot10=60,\ not\ 56.$  

• Wrong answers.         $3\cdot8=24,\ but\ 3\cdot18=54\ and\ 3\cdot19=57,\ not\ 56.$  

• Wrong answers.     $2\cdot12=24,\ but\ 4\cdot12=48\ and\ 5\cdot12=60,\ not\ 56.$