Multiplying and Dividing Whole Numbers with 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.

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 reciprocal of the unit fraction.

Tags

CCSS.5.NF.B.7B

CCSS.5.NF.B.7C

Front

What is the reciprocal of 1/3?

Back

The reciprocal of 1/3 is 3.

Front

What is 7 divided by 1/3?

Back

21

Tags

CCSS.5.NF.B.7B

CCSS.5.NF.B.7C

Front

What is 6 divided by 1/4?

Back

24

Tags

CCSS.5.NF.B.7B

CCSS.5.NF.B.7C

Front

If there is 1/3 of a pan of brownies left, how much will each of the four children get?

Back

1/12 of the whole pan of brownies.

Tags

CCSS.5.NF.B.7A

CCSS.5.NF.B.7C

Front

How many muffins can Jason make with 2 cups of batter if he uses 1/4 cup for each muffin?

Back

8 muffins.

Tags

CCSS.5.NF.B.7A

CCSS.5.NF.B.7C

Front

If Ed has 6 cups of flour and it takes 1/2 cup to make a batch of pancakes, how many batches can he make?

Back

12 batches of pancakes.

Tags

CCSS.5.NF.B.7B

CCSS.5.NF.B.7C

Front

What is the formula to find how many times a unit fraction fits into a whole number?

Back

Multiply the whole number by the denominator of the unit fraction.

Tags

CCSS.5.NF.B.7B

CCSS.5.NF.B.7C

Front

What does it mean to share a fraction equally among a group?

Back

It means to divide the fraction by the number of people in the group.

Tags

CCSS.5.NF.B.3