Multiplication and Division of Fractions

How do you multiply fractions?

• You multiply the numerator and denominator together

• You add the numerator and denominator

• You multiply the tops and bottoms separately

What is (2/3) * (2/4)

• 4/7

• 4/12 or 1/3

• 4/6

• 2/3

What is (2/3) / (7/2)

• 4/21

• 9/5

• 14/6

• 4/14

Multiply 2/6 x 3/5

• 1/5

• 1 / 1

• 1 / 6

• 0

Multiply these fractions

• 13 / 18

• 13 / 72

• 5/9

• 64 / 45

Mrs. Rogers’s lasagna recipe takes 5/8 cups of mozzarella cheese per pan. How much mozzarella cheese will it take if Mrs. Rogers needs to cook 3½ pans of lasagna?

• 2 and 3/16 cups of mozzarella cheese

• 15/16 cups of mozzarella cheese

• 3 and 3/4 cups of mozzarella cheese

• 2 and 1/2 cups of mozzarella cheese

Use cross multiplication or 'W' method to determine if these ratios are equivalent:

2/3 = 10/15

• no

• yes

The answer you get when you multiply is called?

• Quotient

• Product

• Sum

• Difference

To find the reciprocal of a fraction, you...

• Put the fraction over 1

• Flip the fraction

• Reduce the fraction

• Eat the fraction