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Converting Between Percents, Decimals, and Fractions                       Page 3 of 3

Changing Fractions to Decimals

The easiest way to change a fraction to a decimal is to use a calculator.  You simply divide the numerator by the denominator.
Use a calculator to change a fraction into a decimal by dividing the numerator by the denominator.

If you don't have a calculator, it's a little trickier.  One way is to try and rewrite the fraction with a power of 10 as the denominator.  4/5 is the same as 8/10.  We can write 8/10 by putting an 8 in the tenths place.
How to convert a fraction to a decimal without a calculator.



Some fractions are harder than others to change to a decimal without a calculator.  You could also use long division if you can't figure out a way to get a power of 10 as the denominator.


​Changing Fractions to Percents

There's more than one way to change a fraction to a percent.  You could try to rewrite the fraction with 100 as the denominator, but this might be difficult if your denominator isn't a factor of 100.  The fastest and easiest way is probably to use a calculator to change it to a decimal first and then move the decimal over 2 places to the right to change it to a percent.
How to change a fraction to a percent. Use a calculator to change to a decimal first. Then move the decimal two places to the right.


​Practice

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