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If it is a terminating decimal, count the number of digits after the decimal and call it x. Put those digits over 10^x and reduce. For example, if the fraction is 0.84, x is 2, so 84/10^2 = 84/100 = 21/25■

If it is a repeating decimal, put the repeating portion over (10^x)-1. If the fraction is 0.848484..... put 84/(100-1) = 84/99 = 28/33■

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Q: What is the formula to turn a decimal to a fraction?
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Related questions

How do you turn a fraction into a decimal and a decimal in to a percent?

You turn a fraction into a decimal by dividing the top number by the bottom. And you turn a decimal into a percent by multiplying the decimal by 100.


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Though there are an unlimited amount of ways to show a fraction as a decimal. There is only one way to turn a fraction into a decimal.


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As a fraction it is simply 18/1 and as a decimal it is simply 18.0


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You turn the decimal into a fraction. Then you can find the equivalent fraction.


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