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Irrational numbers

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is a real number that cannot be expressed as a ratio of integers; for example, √2 is an irrational number

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product

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The answer to numbers MULTIPLIED

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quotient

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the result of dividing numbers

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re-occuring decimal

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the figures are repeated indefinitely, as in 0.666

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terminating decimal

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it ends, can't divide any further.

0.5, 0.25

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approximation

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a value that is nearly but not exactly correct, like rounding the number

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integer

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any whole number positive or negative, but not a fraction

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simplify

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remove the exponents and make the fraction the lowest possible denominator