Dividing Unit Fractions and 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.

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2A

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 unit fraction.

Tags

CCSS.5.NF.B.7B

CCSS.5.NF.B.7C

Front

What is the result of 1/3 ÷ 1/4?

Back

The result is 4/3 or 1 1/3.

Tags

CCSS.6.NS.A.1

Front

If you have 5 cups of batter and use 1/3 cup per pancake, how many pancakes can you make?

Back

15 pancakes.

Tags

CCSS.5.NF.B.7B

CCSS.5.NF.B.7C

Front

What does it mean to divide a fraction by a whole number?

Back

Dividing a fraction by a whole number means to find out how many times the whole number fits into the fraction.

Front

What is 1/2 ÷ 9?

Back

1/18.

Tags

CCSS.5.NF.B.7A

CCSS.5.NF.B.7C

Front

If a store sells 1/5 of a box of video games each day, how many days to sell 4 boxes?

Back

20 days.

Tags

CCSS.5.NF.B.7B

CCSS.5.NF.B.7C

Front

What is the weight of each jar if 1/5 pound of cornflakes is divided into two jars?

Back

1/10 pound.

Tags

CCSS.5.NF.B.7A

CCSS.5.NF.B.7C

Front

How do you convert a division of fractions into multiplication?

Back

To convert a division of fractions into multiplication, multiply by the reciprocal of the second fraction.

Tags

CCSS.6.NS.A.1

Front

What is the reciprocal of 1/4?

Back

The reciprocal of 1/4 is 4/1 or 4.