Adding & Subtracting 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 are unlike denominators?

Back

Unlike denominators are denominators that are not the same in two or more fractions.

Front

How do you find a common denominator?

Back

To find a common denominator, identify the least common multiple (LCM) of the denominators.

Front

What is an equivalent fraction?

Back

An equivalent fraction is a fraction that represents the same value as another fraction, even though the numerator and denominator may be different.

Front

How do you add fractions with unlike denominators?

Back

1. Find a common denominator. 2. Convert each fraction to an equivalent fraction with the common denominator. 3. Add the numerators and keep the common denominator.

Front

How do you subtract fractions with unlike denominators?

Back

1. Find a common denominator. 2. Convert each fraction to an equivalent fraction with the common denominator. 3. Subtract the numerators and keep the common denominator.

Front

What is the first step in adding or subtracting fractions?

Back

The first step is to find a common denominator.

Front

If you have 1/4 and 2/3, what is the common denominator?

Back

The common denominator for 1/4 and 2/3 is 12.

Front

What is 5/9 + 1/6?

Back

5/9 + 1/6 = 13/18.

Front

What is 1/4 - 2/3?

Back

1/4 - 2/3 = -5/12.