Multiplying Whole Numbers by Fractions

Front

What is a fraction?

Back

A fraction represents a part of a whole, consisting of a numerator (top number) and a denominator (bottom number).

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

Front

What does the numerator in a fraction represent?

Back

The numerator represents the number of parts we have.

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

Front

What does the denominator in a fraction represent?

Back

The denominator represents the total number of equal parts in a whole.

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

Front

How do you multiply a whole number by a fraction?

Back

Multiply the whole number by the numerator of the fraction, then divide by the denominator.

Tags

CCSS.4.NF.B.4B

CCSS.4.NF.B.4C

Front

What is 1/5 of 8?

Back

1/5 of 8 is 8 ÷ 5 = 1.6 or 1 3/5.

Tags

CCSS.4.NF.B.4B

CCSS.4.NF.B.4C

Front

If a recipe calls for 1/4 of a cup of sugar for each batch, how much sugar is needed for 3 batches?

Back

3 x 1/4 = 3/4 of a cup.

Tags

CCSS.4.NF.B.4A

CCSS.4.NF.B.4B

Front

What is 1/7 of 14?

Back

1/7 of 14 is 14 ÷ 7 = 2.

Tags

CCSS.4.NF.B.4B

CCSS.4.NF.B.4C

Front

What is the result of multiplying 3 by 1/5?

Back

3 x 1/5 = 3/5.

Tags

CCSS.4.NF.B.4A

CCSS.4.NF.B.4B

Front

If Jenny spent 12 days at Grandma's house, how many days did her sister spend if she spent 1/4 of that time?

Back

1/4 of 12 days = 12 ÷ 4 = 3 days.

Tags

CCSS.5.NF.B.7B

CCSS.5.NF.B.7C

Front

What is the first step in multiplying a whole number by a fraction?

Back

Multiply the whole number by the numerator of the fraction.

Tags

CCSS.4.NF.B.4B

CCSS.4.NF.B.4C