Adding and Subtracting Unlike Fractions

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When adding or subtracting fractions, I NEVER add or subtract the...

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denominators

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When adding or subtracting fractions, I always add or subtract the...

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numerators

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Which of the following is a multiple of 7? 28, 48, 71, 45

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28

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What is the least common multiple (LCM) of 4 and 6?

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12

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What is the greatest common divisor (GCD) of 8 and 12?

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4

Front

To add fractions with unlike denominators, you must first find the...

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least common denominator (LCD)

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