Least Common Denominator Flashcard

Front

What is a common denominator?

Back

A common denominator is a number that can be used as a denominator for two or more fractions, allowing them to be added or compared.

Front

How do you find the least common denominator (LCD) of two fractions?

Back

To find the LCD, list the multiples of each denominator and find the smallest multiple that appears in both lists.

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Back

The least common denominator is 10.

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Back

The least common denominator is 24.

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Back

12

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Back

6

Front

What do you need to have when adding unlike fractions?

Back

You need a common denominator.

Front

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

Back

Find the least common denominator (LCD) for the fractions.

Front

If the denominators of two fractions are 4 and 8, what is their least common denominator?

Back

The least common denominator is 8.

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Back

Yes, 18 can be a common denominator.