# How do you write 9/10 as a percent?

Oct 28, 2016

First of all, what is 1 percent?

Well, one percent is the same as 0.01 .

It simply means 1 part out of 100. That is 100 symmetrical or equal parts.

In other words, if you get a sheet of paper and divide it into 100 equal parts then take one of those parts, you have 1 percent.

"Percent" in a sense means per hundred because the word "cent" actually means a hundred in latin.

Now, if one percent is 0.01 , ten percent is going to be 0.10 . You need ten 0.01's to make 0.10. If you follow the logic below, you will understand why...

0.01 + 0.01 = 0.02

0.01 + 0.01 + 0.01 = 0.03

0.01 + 0.01 + 0.01 + 0.01 = 0.04

...

0.01 + 0.01 + 0.01 + 0.01 + 0.01 + 0.01 + 0.01 + 0.01 + 0.01 = 0.09

0.01 + 0.01 + 0.01 + 0.01 + 0.01 + 0.01 + 0.01 + 0.01 + 0.01 + 0.01 = 0.10

etc... etc...

0.01 x 10 = 0.10

Another way to write ten percent is $\frac{1}{10}$. This is because ten percent is in fact $\frac{10}{100}$. It takes $10 x 10$ percent to make 100%.

10 x 10% = 100%

$10$ is one tenth of $100$, that is why ten percent can also be written as $\frac{1}{10.}$

Now, if $\frac{1}{10}$ is ten percent, what is $\frac{9}{10}$?

Well, $\frac{9}{10}$ is simply $9 x \frac{1}{10}$. It's $9$ times $10$ percent.
$9$ times ten percent is 90%.

Which means that:

9/10 = 90%