Adding and Subtracting Fractions with Unlike Denominators

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What is a fraction?

Back

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 the denominator in a fraction represent?

Back

The denominator indicates how many equal parts the whole is divided into.

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What does the numerator in a fraction represent?

Back

The numerator indicates how many parts of the whole are being considered.

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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 the fractions, and then add the numerators.

Front

What is a common denominator?

Back

A common denominator is a shared multiple of the denominators of two or more fractions.

Front

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

Back

The first step is to find a common denominator.

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Front

What must you have to add and subtract fractions?

Back

Common denominators.