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what is a reciprocal number?

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    http://www.mathsisfun.com/reciprocal.html

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    The opposite. If you have a fraction, just flip it. Example: 2/3 and 3/2 are reciprocals. If you don't have a fraction, put 1 on top of the whole number. Example: 7 and 1/7 are reciprocals.

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