Addition and Subtraction of Rational Numbers

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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 each fraction to an equivalent fraction with that denominator, 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 does it mean to rename a fraction in lowest terms?

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Renaming a fraction in lowest terms means simplifying it to its simplest form, where the numerator and denominator have no common factors other than 1.

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

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To convert a mixed number to an improper fraction, multiply the whole number by the denominator, add the numerator, and place that result over the original denominator.

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