Add and Subtract Fractions with Models (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.2B

CCSS.3.NF.A.1

Front

What does it mean to have unlike denominators?

Back

Unlike denominators are when the bottom numbers of two or more fractions are different, making it necessary to find a common denominator to add or subtract them.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

How do you find a common denominator for 1/3 and 1/6?

Back

The least common denominator (LCD) for 1/3 and 1/6 is 6.

Front

Convert 1/3 to an equivalent fraction with a denominator of 6.

Back

1/3 = 2/6.

Tags

CCSS.4.NF.A.1

CCSS.3.NF.A.3B

Front

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

Back

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

Tags

CCSS.7.NS.A.1C

Front

How do you add 1/4 and 1/2?

Back

Convert 1/2 to 2/4, then add: 1/4 + 2/4 = 3/4.

Tags

CCSS.4.NF.B.3D

CCSS.4.NF.B.3C

Front

What is the process for subtracting fractions with unlike denominators?

Back

First, find a common denominator, convert the fractions, then subtract the numerators.

Tags

CCSS.7.NS.A.1C

Front

Solve: 3/6 - 1/6.

Back

3/6 - 1/6 = 2/6, which simplifies to 1/3.

Tags

CCSS.4.NF.B.3D

CCSS.4.NF.B.3C

Front

What is the result of adding 1/6 and 1/3?

Back

Convert 1/3 to 2/6, then add: 1/6 + 2/6 = 3/6, which simplifies to 1/2.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

How do you convert 5/6 to an equivalent fraction with a denominator of 12?

Back

5/6 = 10/12.

Tags

CCSS.4.NF.A.1

CCSS.3.NF.A.3B