Dividing Unit Fractions

Front

What is a unit fraction?

Back

A unit fraction is a fraction where the numerator is 1 and the denominator is a positive integer, such as 1/2, 1/3, or 1/4.

Front

How do you divide a whole number by a unit fraction?

Back

To divide a whole number by a unit fraction, multiply the whole number by the denominator of the fraction. For example, 6 ÷ 1/3 is the same as 6 x 3 = 18.

Front

What does it mean to share a fraction equally?

Back

Sharing a fraction equally means dividing that fraction into equal parts. For example, sharing 1/2 of a pineapple between 2 friends means each gets 1/4.

Front

If you have 1/2 of a pizza and you want to share it with 3 friends, how much does each friend get?

Back

Each friend gets 1/6 of the pizza.

Front

What is the result of dividing a fraction by a whole number?

Back

Dividing a fraction by a whole number means you multiply the denominator of the fraction by that whole number. For example, 1/2 ÷ 2 = 1/4.

Front

How many 1/4 cups are in 2 cups?

Back

There are 8 servings of 1/4 cup in 2 cups.

Front

What is the relationship between multiplication and division of fractions?

Back

Multiplication of fractions is the inverse operation of division. Dividing by a fraction is the same as multiplying by its reciprocal.

Front

If a recipe calls for 1/3 cup of sugar and you want to make 3 batches, how much sugar do you need?

Back

You need 1 cup of sugar (1/3 x 3 = 1).

Front

What is the formula for dividing fractions?

Back

To divide fractions, multiply by the reciprocal of the divisor. For example, a/b ÷ c/d = a/b x d/c.

Front

How do you find out how many times a unit fraction fits into a whole number?

Back

To find out how many times a unit fraction fits into a whole number, divide the whole number by the unit fraction. For example, 1 ÷ 1/4 = 4.