(M7) Test: Add/Subtract 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, first find a common denominator, convert each fraction, and then add the numerators.

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What is the process for subtracting rational numbers?

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To subtract rational numbers, find a common denominator, convert the fractions, and then subtract the numerators.

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How do you convert a negative rational number to a positive one?

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To convert a negative rational number to a positive one, simply remove the negative sign.

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What is the result of adding a positive and a negative rational number?

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The result depends on the absolute values; if the positive number is larger, the result is positive, and if the negative number is larger, the result is negative.

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What is the result of subtracting a larger number from a smaller number?

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The result will be negative.

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What is Mr. Smith's account balance after depositing $539.20 into -$275.78?

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$263.42.

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