Dividing Unit Fractions by Whole Numbers

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 unit fraction by a whole number?

Back

To divide a unit fraction by a whole number, multiply the denominator of the fraction by the whole number. For example, 1/4 ÷ 3 = 1/(4×3) = 1/12.

Front

What is the result of 1/6 ÷ 3?

Back

1/6 ÷ 3 = 1/18.

Front

If you have 1/4 of a pizza and you want to share it with 3 friends, how much does each friend get?

Back

1/4 ÷ 3 = 1/12, so each friend gets 1/12 of the pizza.

Front

What does it mean to split a fraction into equal parts?

Back

Splitting a fraction into equal parts means dividing the fraction by a whole number, which results in smaller fractions that are equal.

Front

What is the answer to 1/9 ÷ 3?

Back

1/9 ÷ 3 = 1/27.

Front

If a moving company has 1/6 of a ton to move and makes 4 trips, how much weight is moved each trip?

Back

1/6 ÷ 4 = 1/24, so each trip has 1/24 of a ton.

Front

What is the general rule for dividing fractions?

Back

To divide fractions, multiply the first fraction by the reciprocal of the second fraction.

Front

What is a reciprocal?

Back

A reciprocal of a fraction is obtained by flipping the numerator and denominator. For example, the reciprocal of 1/3 is 3/1.

Front

How do you find the fraction of a bag of food each cat gets if there are 9 cats and 1/4 of a bag?

Back

1/4 ÷ 9 = 1/36, so each cat gets 1/36 of the bag.