Math - Unit 1 (Dividing/Multiplying Fractions)

Math - Unit 4 (Dividing/Multiplying Fractions)

You have two chances - highest score counts:) Go slow!

Multiplying Mixed #s

• 1. Convert from mixed number to improper fractions.​

• 2. Simplify if possible (any way – one number from top, one from bottom)​

• 3. Multiply the numerators of the fractions to get the new numerator.​

• 4. Multiply the denominators of the fractions to get the new denominator.​

Multiple Choice

 $2\ \frac{2}{4}$  x  $4\ \frac{5}{7}$  

• 165/14

• 11  20/28
  

• 11  11/14
  

• 8   10/28
  

Multiple Choice

 $4\ x\ 2\ \frac{3}{5}$  

• 10  2/5
  

• 8   3/5
  

• 13/20

• 10  3/5
  

Dividing Fractions

• 1. Convert any mixed numbers to improper fractions. (Larger numerator than denominator)​

• 2. Turn the second fraction (the number dividing)  into a reciprocal (flip it upside down!) and turn the question into a multiplication question.​ ​

• 3. Simplify if possible.

• 4. Multiply the numerators!​ Multiply the Denominators!​

Multiple Choice

 $\frac{1}{3}$  /  $\frac{2}{5}$  =  $\frac{2}{15}$ 

What mistake was made?

• The reciprocal of the first fraction was not taken
  

• The reciprocal of the second fraction was not taken
  

• The answer was not simplified first
  

• The answer was not simplified second
  

Multiple Choice

 $\frac{3}{5}$  /  $\frac{6}{8}$  

• 24/30

• 18/40

• 4/5

• 9/20

Multiple Choice

 $\frac{25}{45}$  / $\frac{3}{9}$  

• 205/130
  

• 1  2/3
  

• 25/15

• 1  75/130
  

Multiple Choice

 $\frac{2}{3}$  /  $\frac{3}{x}$  =  $\frac{10}{9}$  

What is the missing number (X)?

• 2

• 3

• 4

• 5

Multiple Choice

 $\frac{4}{x}$  /  $\frac{8}{11}$  =  $1\ \frac{5}{6}$  

What is the missing number (X)?

• 1

• 2

• 3

• 4

Multiple Choice

 $2\ \frac{1}{2}$  /  $3\ \frac{3}{4}$  

• 2/3

• 75/8

• 9  3/8
  

• 3/4

Multiple Choice

 $\frac{3}{9}$  / 6

• 2

• 3/54

• 18/9

• 1/18

Multiple Choice

To bake seven cakes, 24 1/2 cups of flour are needed. How many cups of flour are needed per cake?

• 14/49

• 2/7

• 3   1/2
  

• 2  1/3