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 each fraction, and then add the numerators.

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What is the first step in subtracting rational numbers?

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The first step in subtracting rational numbers is to ensure both numbers have a common denominator.

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What does it mean to subtract a negative number?

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Subtracting a negative number is the same as adding its positive counterpart.

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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 the result over the original denominator.

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