FIND THE COMMON DENOMINATOR

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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 compared.

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

Back

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

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20

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40

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36

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14

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22

Front

Why is it important to find a common denominator when adding fractions?

Back

Finding a common denominator allows fractions to be combined into a single fraction, making calculations easier.

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What is the least common multiple (LCM)?

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

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How can you use prime factorization to find the LCM?

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By breaking down each number into its prime factors and taking the highest power of each prime factor.