Adding Fractions with Unlike Denominators

Front

What is a fraction?

Back

Front

What does it mean to have unlike denominators?

Back

Front

How do you add fractions with unlike denominators?

Back

To add fractions with unlike denominators, first find a common denominator, convert each fraction to an equivalent fraction with that denominator, and then add the numerators.

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. It allows you to add or subtract the fractions easily.

Front

What is the least common denominator (LCD)?

Back

The least common denominator (LCD) is the smallest common multiple of the denominators of two or more fractions.

Front

How do you find the least common denominator?

Back

To find the least common denominator, list the multiples of each denominator and find the smallest multiple that appears in both lists.

Front

Back

The first step is to find the least common denominator (LCD) of 2 and 8, which is 8.

Front

Back

Front

Back

Front

Back