Adding and Subtracting Fractions and Mixed Numbers

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What is a fraction?

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What does it mean to simplify a fraction?

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To simplify a fraction means to reduce it to its lowest terms, where the numerator and denominator have no common factors other than 1.

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How do you add fractions with different denominators?

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

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What is a mixed number?

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How do you subtract fractions?

Back

To subtract fractions, ensure they have a common denominator, then subtract the numerators and keep the denominator the same.

Front

What is the least common denominator (LCD)?

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

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How do you convert a mixed number to an improper fraction?

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Multiply the whole number by the denominator, add the numerator, and place the result over the original denominator.

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