Add and Subtract Fractions with Unlike Denominators

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What is a fraction?

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What does it mean to have unlike denominators?

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How do you add fractions with unlike denominators?

Back

To add fractions with unlike denominators, first find a common denominator, convert each fraction to an equivalent fraction with that denominator, and then add the numerators.

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 you to add or subtract fractions.

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What is the first step in subtracting fractions with unlike denominators?

Back

The first step is to find a common denominator for the fractions you want to subtract.

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How do you convert a fraction to an equivalent fraction?

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To convert a fraction to an equivalent fraction, multiply both the numerator and the denominator by the same non-zero number.

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What is the least common multiple (LCM)?

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The least common multiple (LCM) is the smallest multiple that two or more numbers share. It is used to find a common denominator.

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What is the process of simplifying a fraction?

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Simplifying a fraction means reducing it to its simplest form by dividing both the numerator and the denominator by their greatest common divisor (GCD).