Add and Subtract Fractions with Unlike Denominators

Front

What do you need to find when the denominators of fractions are not the same?

Back

You must find a common denominator.

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Back

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Back

Front

When adding or subtracting fractions, what do you NEVER add or subtract?

Back

You NEVER add or subtract the denominators.

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Back

Front

What is a common denominator?

Back

A common denominator is a shared multiple of the denominators of two or more fractions.

Front

How do you convert fractions to have a common denominator?

Back

You can multiply the numerator and denominator of each fraction by the necessary factors to make the denominators the same.

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 are different.

Front

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

Back

The first step is to find a common denominator.

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Back

The common denominator is 6.