Word problems: adding/subtracting fractions

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What is a fraction?

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What does the numerator in a fraction represent?

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The numerator is the top number of a fraction and it represents how many parts we have.

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What does the denominator in a fraction represent?

Back

The denominator is the bottom number of a fraction and it represents the total number of equal parts the whole is divided into.

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How do you add fractions with the same denominator?

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How do you subtract fractions with the same denominator?

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What do you do when adding fractions with different denominators?

Back

When adding fractions with different denominators, first find a common denominator, convert the fractions, and then add the numerators.

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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 the fractions.

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