Rational Numbers Test REVIEW

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What is a rational number?

Back

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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What is the absolute value of a number?

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The absolute value of a number is its distance from zero on the number line, regardless of direction. For example, |−5| = 5 and |5| = 5.

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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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The result is 18.

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Back

The absolute value is 808.

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The result is -14.

Front

What is the process to subtract a negative rational number?

Back

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

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What is the formula for finding a common denominator?

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The common denominator is the least common multiple (LCM) of the denominators of the fractions being added or subtracted.