Operations with 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 two rational numbers with different denominators?

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To add two rational numbers with different denominators, find a common denominator, convert each fraction, and then add the numerators.

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What is the rule for multiplying two negative rational numbers?

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The product of two negative rational numbers is positive.

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What is the rule for dividing a rational number by a negative number?

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Dividing a rational number by a negative number results in a negative quotient.

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How do you convert a decimal to a fraction?

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To convert a decimal to a fraction, write the decimal as a fraction with a denominator of 1, then multiply the numerator and denominator by 10 for each digit after the decimal point.

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