Subtracting Fractions

Front

What is a fraction?

Back

A fraction represents a part of a whole. It 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

How do you subtract fractions with different denominators?

Back

To subtract fractions with different denominators, first find a common denominator, convert the fractions, and then subtract the numerators.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

What is a common denominator?

Back

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

Front

What is the first step in subtracting 7/8 - 5/6?

Back

The first step is to find a common denominator for 8 and 6, which is 24.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

What is 7/8 converted to a fraction with a denominator of 24?

Back

7/8 is converted to 21/24.

Tags

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

Front

What is 5/6 converted to a fraction with a denominator of 24?

Back

5/6 is converted to 20/24.

Tags

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

Front

What is the result of 21/24 - 20/24?

Back

The result is 1/24.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

What is the result of 7/8 - 7/12?

Back

The result is 7/24.

Tags

CCSS.7.NS.A.1C

Front

How do you subtract 11/20 - 2/5?

Back

Convert 2/5 to a fraction with a denominator of 20, which is 8/20, then subtract: 11/20 - 8/20 = 3/20.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2