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You are here: Experts > Science > Math for Kids > Basic Math > reciprocals
Expert: Lynn Houston - 10/14/2009
Question
i would like to know what a reiprocal is and how it works with decimals
Answer
A reciprocal is a number that you multiply by so that the result equals 1. The easiest way to find it is to just flip the fraction over.
Here's an example: What is the reciprocal of 3?
3 is the same as 3/1, so we flip and the reciprocal is 1/3
Reciprocal of 4/5 is 5/4
Reciprocal of 2 1/2?
Change to a fraction --> 5/2, then flip --> 2/5
Same for a fraction. Convert to a fraction and flip. Reciprocal of .25
.25 = 1/4, reciprocal = 4/1 or 4.
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