Adding and Subtracting Fractions with Unlike Denominators

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What is a fraction?

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A fraction represents a part of a whole and consists of a numerator (top number) and a denominator (bottom number).

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What does it mean to have unlike denominators?

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Unlike denominators are denominators that are not the same. For example, in the fractions 1/3 and 1/4, the denominators 3 and 4 are unlike.

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How do you add fractions with unlike denominators?

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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.

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What is the least common denominator (LCD)?

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The least common denominator (LCD) is the smallest multiple that two or more denominators share. It is used to add or subtract fractions.

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How do you find the least common denominator of 3 and 4?

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The least common denominator of 3 and 4 is 12, as it is the smallest number that both 3 and 4 can divide into evenly.

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

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

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