What is a Percent?

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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 is25 / 100
 
.
If you had a pizza that was cut into 100 pieces25% 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


Let's go back to that pizza that's cut into 100 pieces...
With fractions, the whole pizza would be all 100 pieces:
A pizza cut into 100 pieces...   100 / 100 = 1 pizza
So, the whole thing would be 100%!
What if you had3 1/2
 
pizzas?
What percent would that be?
Cut each pizza into 100 pieces...
Three pizzas each cut into 100 pieces and a half a pizza that is 50 pieces
That's 350 pieces...  So, that's 350%!
Sometimes, you'll hear someone, like a coach, say, "I want you to give 110% out there!"
If you tried your hardest, that would be your whole effort, right?  So, that would be 100% of your effort.  Doing more than that would be impossible.  But, that's just their way of saying that they want you to try harder that you ever have before.
In the next lessons, I'll show you how to bounce back and forth between percents, fractions and decimals.  It's pretty simple stuff and you'll soon be a pro.


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