Dividing Whole Numbers by 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, 8 ÷ 1/4 is the same as 8 × 4.

Front

What is the result of 8 ÷ 1/4?

Back

32

Front

What is the result of 6 ÷ 1/3?

Back

18

Front

What is the result of 4 ÷ 1/2?

Back

8

Front

If Jason has 2 cups of muffin batter and uses 1/4 cup for each muffin, how many muffins can he make?

Back

8 muffins.

Front

If a malt shop uses 1/6 of a box of waffle cones each day, how many days will 5 boxes last?

Back

30 days.

Front

What does it mean to divide by a fraction?

Back

Dividing by a fraction means to multiply by its reciprocal. For example, dividing by 1/4 is the same as multiplying by 4.

Front

What is the reciprocal of 1/4?

Back

4.

Front

What is the formula for dividing a whole number by a fraction?

Back

Whole number ÷ Fraction = Whole number × (Reciprocal of the fraction).