Skip to Main Content

Math Skills Overview Guide

Converting Percentages

What does it mean?


From Wolfram MathWorld:

The use of percentages is a way of expressing ratios in terms of whole numbers. A ratio or fraction is converted to a percentage by multiplying by 100 and appending a "percentage sign" %.

Percent -- from Wolfram MathWorld

A percent can always be written as a decimal, and a decimal can be written as a percent, by moving the decimal point two places to the right like this $$0.15 = 15 \% $$

 What does it look like?

A general example to help you recognize patterns and spot the information you're looking for

15% Tip $${ $47.60 * 15 = 714}$$ Divide the answer by 100 $${714 / 100 = $7.14 }$$

You'll use it...

We use percentages when calculating tips for everyday services.


Describing the Meaning of Percent

Watch a Khan Academy Video »
Length: 3:01


Converting Decimals to Percents

Watch a Khan Academy Video »
Length: 2:36

Practice Problems