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 ÷ 2 = 1/(4*2) = 1/8.

Front

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

Back

The result of dividing a fraction by a whole number is always a fraction.

Front

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

Back

Each person would get 1/3 ÷ 3 = 1/9 of the pizza.

Front

What is the formula for dividing fractions?

Back

To divide fractions, multiply the first fraction by the reciprocal of the second fraction. For example, a/b ÷ c = a/b * 1/c.

Front

What is the reciprocal of a fraction?

Back

The reciprocal of a fraction is obtained by swapping its numerator and denominator. For example, the reciprocal of 2/3 is 3/2.

Front

How do you simplify the fraction 1/12 ÷ 3?

Back

1/12 ÷ 3 = 1/(12*3) = 1/36.

Front

What is the relationship between dividing fractions and multiplying by the reciprocal?

Back

Dividing a fraction by a whole number can be thought of as multiplying by the reciprocal of that whole number.

Front

If a recipe calls for 1/4 cup of sugar and you want to make 1/2 of the recipe, how much sugar do you need?

Back

You need 1/4 ÷ 2 = 1/8 cup of sugar.

Front

What is the result of 1/8 divided by 4?

Back

1/8 ÷ 4 = 1/(8*4) = 1/32.