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 means finding the difference between two fractions.

Tags

CCSS.4.NF.B.3A

Front

What are unlike denominators?

Back

Unlike denominators are denominators that are not the same in two or more fractions.

Tags

CCSS.3.NF.A.3A

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

Front

How do you subtract fractions with unlike denominators?

Back

1. Find a common denominator. 2. Convert each fraction to an equivalent fraction with the common denominator. 3. Subtract the numerators and keep the common denominator.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

What is a common denominator?

Back

A common denominator is a shared multiple of the denominators of two or more fractions.

Front

How do you find the least common denominator (LCD)?

Back

The least common denominator is the smallest multiple that is common to the denominators of the fractions.

Front

What is the first step in subtracting 7/8 - 1/6?

Back

The first step is to find the least common denominator of 8 and 6, which is 24.

Tags

CCSS.7.NS.A.1C

Front

Convert 7/8 to a fraction with a denominator of 24.

Back

7/8 = 21/24.

Tags

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

Front

Convert 1/6 to a fraction with a denominator of 24.

Back

1/6 = 4/24.

Tags

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

Front

What is the result of 21/24 - 4/24?

Back

21/24 - 4/24 = 17/24.

Tags

CCSS.7.NS.A.1C