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 when the bottom numbers of two or more fractions are different.

Front

How do you find a common denominator?

Back

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

Front

Solve: 4/18 + 2/9

Back

4/9

Front

What is the least common multiple (LCM) of 2, 3, and 4?

Back

The LCM of 2, 3, and 4 is 12.

Front

What is the LCM of 5 and 6?

Back

The LCM of 5 and 6 is 30.

Front

Solve: 2/6 + 1/2

Back

5/6

Front

Solve: 3/8 + 2/4

Back

7/8

Front

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

Back

The first step is to find a common denominator.

Front

What is a numerator?

Back

The numerator is the top number of a fraction that indicates how many parts are being considered.