Math CentralQuandaries & Queries


Question from Lisa, a parent:

i am trying to turn a decimal into a fraction. my example is to turn 10.5 into a fraction at its lowest form

Hi Lisa,

Let me try 23.4, First I want to think of 23.4 as the fraction 23.4/1. To eliminate the decimal point and maintain an equivalent fraction I can multiply the numerator and denominator by to. thus


The numerator and denominator are both divisible by 2 so finally I get

23.4/1 = 117/5

Now try this with 10.5,

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