Add and Subtract Rational Numbers (Fractions)

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What is a rational number?

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A rational number is any number that can be expressed as the quotient or fraction of two integers, where the denominator is not zero.

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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 the first step in subtracting fractions?

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The first step in subtracting fractions is to find a common denominator.

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What is the formula for converting a percentage to a fraction?

Back

To convert a percentage to a fraction, divide the percentage by 100 and simplify if possible.

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What is the least common multiple (LCM) of 5 and 7?

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The LCM of 5 and 7 is 35.