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The root word of rational is ratio.

4/21/2017 Rational Numbers The root word of rational is ratio. Ratios are fractions. Any number that can be written as the quotient (a fraction) of two integers is a rational number. However, the denominator cannot be 0.

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4/21/2017 0.25 -5 3 1 2 are rational numbers.

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1 5 – = 2 10 – = 1 5 – = 3 15 – = -5 An integer can be written as a “quotient of 2 integers,” so integers are rational.

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3 7 = 3 1 2 3 7 – = 3 7 – = 6 14 = A mixed number can be written as a “quotient of 2 integers,” so mixed numbers are rational.

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4 1 – = 8 2 = 4 1 = 16 4 – = 0.25 A terminating decimal can be written as a “quotient of 2 integers,” so terminating decimals are rational.

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3 1 = – 3 1 = 9 3 = -9 -3 = A repeating decimal can be written as a “quotient of 2 integers,” so repeating decimals are rational.

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Rational numbers are … fractions – both simple and mixed

decimals – both repeating and terminating integers …-4, -3, -2, -1, 0, 1, 2, 3…

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