Percents - Cool math Prealgebra Help Lessons

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Coolmath Prealgebra
Percents Lesson 1 - What is a Percent? (page 1 of 2)
---- This prealgebra lesson explains what a percent is.


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We use the symbol % for "percent."

The word "percent" really just means "per hundred."

So, 25% means "25 per hundred" which is

If you had a pizza that was cut into 100 pieces, 25% of the pizza would be 25 pieces!

One pizza cut into 100 pieces... Another pizza in fourths with each forth cut into 25 pieces... Then, 1/4th of the pizza which is 25 pieces out of 100 which is 25% of the pizza!

A percent is just another way of counting part of a whole -- like fractions and decimals.

Check this out:

25% = 25 / 100 = ( 25 / 100 ) divided by ( 25 / 25 ) = 1 / 4

and

25% = 25 / 100 = .25

So, 25% is the same as

25 / 100 and 1 / 4 and .25

Continued on the next page

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