T7-2 Finding Common denominators

Front

What is a common denominator?

Back

A common denominator is a number that is a multiple of the denominators of two or more fractions. It allows fractions to be compared or added together.

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What is the least common denominator (LCD)?

Back

The least common denominator (LCD) is the smallest common multiple of the denominators of two or more fractions.

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20

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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.

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Back

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12

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Front

How do you find the least common multiple (LCM) of two numbers?

Back

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

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What is the relationship between common denominators and adding fractions?

Back

Common denominators are necessary for adding fractions because they allow the fractions to be expressed with the same denominator, making addition possible.

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If the denominators are 4 and 6, what is the least common denominator?

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