Add and Subtract Fractions

Front

What do you need to add or subtract fractions?

Back

Common denominators are needed to add or subtract fractions.

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What is the result of 3/9 + 4/9?

Back

7/9

Front

Define a fraction.

Back

Front

What is a common denominator?

Back

A common denominator is a shared multiple of the denominators of two or more fractions, allowing them to be added or subtracted.

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Back

The least common multiple (LCM) of 2 and 3 is 6, so the common denominator is 6.

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

Back

Find a common denominator before adding the fractions.

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