It"s very common once learning about fractions to want to know how convert a portion like 18/20 into a percentage. In this step-by-step guide, we"ll display you how to revolve any portion into a portion really easily. Let"s take a look!


Want to quickly learn or display students how to transform 18/20 to a percentage? beat this very quick and fun video clip now!


Before we acquire started in the portion to percent conversion, let"s walk over some an extremely quick fraction basics. Remember that a molecule is the number over the fraction line, and the denominator is the number listed below the fraction line. We"ll usage this later on in the tutorial.

You are watching: 18 is what percent of 20?

When we space using percentages, what we are really speak is the the portion is a fraction of 100. "Percent" means per hundred, and also so 50% is the same as speak 50/100 or 5/10 in fraction form.

So, since our denominator in 18/20 is 20, us could readjust the portion to do the denominator 100. To do that, we divide 100 through the denominator:

100 ÷ 20 = 5

Once we have that, we can multiple both the numerator and also denominator by this multiple:


18 x 5/20 x 5=90/100

Now we can see that our portion is 90/100, which means that 18/20 together a portion is 90%.

We can likewise work this out in a simpler way by an initial converting the fraction 18/20 come a decimal. To execute that, we simply divide the numerator by the denominator:

18/20 = 0.9

Once we have actually the price to that division, we have the right to multiply the price by 100 to do it a percentage:

0.9 x 100 = 90%

And there you have it! Two different ways to transform 18/20 to a percentage. Both space pretty straightforward and also easy to do, however I personally choose the transform to decimal an approach as it takes less steps.

I"ve viewed a the majority of students get perplexed whenever a concern comes up around converting a portion to a percentage, yet if you follow the procedures laid out here it should be simple. The said, you might still need a calculator because that more complex fractions (and girlfriend can constantly use our calculator in the form below).

If you want to practice, grab yourself a pen, a pad, and also a calculator and shot to convert a few fractions to a percent yourself.

Hopefully this tutorial has actually helped you come understand exactly how to transform a portion to a percentage. You deserve to now go forth and also convert fractions to percentages as much as your small heart desires!

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