Adding 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).

Front

What does it mean to have unlike denominators?

Back

Unlike denominators are denominators that are different from each other, making it necessary to find a common denominator to add or subtract fractions.

Front

How do you find a common denominator for 1/3 and 1/4?

Back

The least common multiple (LCM) of the denominators (3 and 4) is 12, so the common denominator is 12.

Front

Convert 1/3 to a fraction with a denominator of 12.

Back

1/3 = 4/12.

Front

Convert 1/4 to a fraction with a denominator of 12.

Back

1/4 = 3/12.

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.

Front

What is 3/10 + 2/5?

Back

7/10.

Front

What is 1/3 + 1/4?

Back

7/12.

Front

What is 3/8 + 2/8?

Back

5/8.

Front

What is 4/5 + 1/10?

Back

9/10.