Add & Subtract Fractions with Uncommon 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 the denominator in a fraction represent?

Back

The denominator indicates the total number of equal parts the whole is divided into.

Front

What does the numerator in a fraction represent?

Back

The numerator indicates how many parts of the whole are being considered.

Front

What is the first step in adding or subtracting fractions with different denominators?

Back

Find a common denominator for the fractions.

Front

How do you find a common denominator for two fractions?

Back

You can find a common denominator by determining the least common multiple (LCM) of the two denominators.

Front

What is the least common multiple (LCM)?

Back

The least common multiple is the smallest multiple that two or more numbers share.

Front

How do you convert fractions to have a common denominator?

Back

Multiply the numerator and denominator of each fraction by the necessary factor to reach the common denominator.

Front

What is the process for adding fractions with a common denominator?

Back

Add the numerators together and keep the common denominator the same.

Front

What is the process for subtracting fractions with a common denominator?

Back

Subtract the numerators and keep the common denominator the same.

Front

What should you do after adding or subtracting fractions?

Back

Simplify the resulting fraction if possible.