Subtracting Fractions with Unlike Denominators

Front

What is a fraction?

Back

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

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

Front

What does it mean to subtract fractions?

Back

Subtracting fractions involves finding the difference between two fractions, which may require finding a common denominator if the fractions have unlike denominators.

Tags

CCSS.4.NF.B.3A

Front

How do you find a common denominator for two fractions?

Back

To find a common denominator, identify the least common multiple (LCM) of the denominators of the fractions.

Front

What is the first step in subtracting fractions with unlike denominators?

Back

The first step is to find a common denominator for both fractions.

Tags

CCSS.7.NS.A.1C

Front

If you have 1/4 and 2/3, what is the common denominator?

Back

The common denominator for 1/4 and 2/3 is 12.

Front

How do you convert 1/4 to a fraction with a denominator of 12?

Back

Multiply the numerator and denominator of 1/4 by 3 to get 3/12.

Tags

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

Front

How do you convert 2/3 to a fraction with a denominator of 12?

Back

Multiply the numerator and denominator of 2/3 by 4 to get 8/12.

Tags

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

Front

What is the result of subtracting 3/12 from 8/12?

Back

The result is 5/12.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

What is an equivalent fraction?

Back

An equivalent fraction is a fraction that represents the same value as another fraction, even though the numerator and denominator are different.

Tags

CCSS.3.NF.A.3A

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

Front

How do you find an equivalent fraction for 1/2?

Back

Multiply both the numerator and denominator by the same number, for example, 1/2 = 2/4.

Tags

CCSS.3.NF.A.3A

CCSS.3.NF.A.3B

CCSS.4.NF.A.1