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 the fractions.

Front

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

Back

The least common multiple (LCM) of 3 and 4 is 12, so the common denominator is 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 the sum of 1/3 and 1/4?

Back

1/3 + 1/4 = 7/12.

Front

How do you convert 1/3 to a fraction with a denominator of 12?

Back

Multiply the numerator and denominator by 4: 1/3 = 4/12.

Front

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

Back

Multiply the numerator and denominator by 3: 1/4 = 3/12.

Front

What is the sum of 2/5 and 1/4?

Back

2/5 + 1/4 = 13/20.

Front

What is the sum of 3/8 and 1/4?

Back

3/8 + 1/4 = 5/8.

Front

What is the sum of 3/8 and 2/8?

Back

3/8 + 2/8 = 5/8.