Multiplying Whole Numbers by Fractions

Front

What is a fraction?

Back

A fraction represents a part of a whole and is written as 'a/b', where 'a' is the numerator (part) and 'b' is the denominator (whole).

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

Front

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

Back

Multiplying a whole number by a fraction means finding a part of that whole number. For example, 3 x 1/4 means finding 1/4 of 3.

Tags

CCSS.4.NF.B.4A

CCSS.4.NF.B.4B

Front

How do you multiply a whole number by a fraction?

Back

To multiply a whole number by a fraction, multiply the whole number by the numerator and then divide by the denominator. For example, 6 x 1/2 = (6 x 1) / 2 = 3.

Tags

CCSS.4.NF.B.4B

CCSS.4.NF.B.4C

Front

What is the product of 6 and 1/5?

Back

The product of 6 and 1/5 is 6 x 1/5 = 6/5 or 1.2.

Tags

CCSS.4.NF.B.4B

CCSS.4.NF.B.4C

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

Jenny's sister spent 12 x 1/4 = 3 days at Grandma's house.

Tags

CCSS.4.NF.B.4B

CCSS.4.NF.B.4C

Front

What is 3/5 of 20?

Back

3/5 of 20 is calculated as (3 x 20) / 5 = 60 / 5 = 12.

Tags

CCSS.4.NF.B.4B

CCSS.4.NF.B.4C

Front

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

Back

The first step is to multiply the whole number by the numerator of the fraction.

Tags

CCSS.4.NF.B.4B

CCSS.4.NF.B.4C

Front

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

Back

The second step is to divide the result by the denominator of the fraction.

Tags

CCSS.4.NF.B.4B

CCSS.4.NF.B.4C

Front

If you have 5 packs of gum and distribute 3/5 of them, how many packs do you distribute?

Back

You distribute 5 x 3/5 = 3 packs of gum.

Tags

CCSS.4.NF.B.4B

CCSS.4.NF.B.4C

Front

What does the term 'numerator' refer to in a fraction?

Back

The numerator is the top number in a fraction that indicates how many parts are being considered.

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B