Need help learning percentages?

Question

I totally for got how to do percentages. Can someone make me remember please?

Answer 1

Formula

Amount = Base x Percent

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Fing the amount when the base and percent are known.

75 percent of 8 gives what amount

First convert 75% to decimal

first remove the % sign and divide by 100

75/100 = 0.75

Multiply 8 by the decimal

8 x 0.75 = 6

The amount is 6

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finding the base when the amount and percent are known

Amount / Percent = base

first convert 75% to decimal

first remove the % sign. divide 75 by 100

75/100 = 0.75

Divide the amount by the decimal

6 / 0.75 = 8

The base is 8

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Finding the percent when the amount and base are known.

Amount / base = Percent

6 is what percent of 8

divide 6 by 8

6 / 8 = 0,75

Convert the decimal to percent

Multiply the decimal by 100 and attact the % sign

0.75 x 100 = 75%

The percent is 75%

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Click on the URL below for additional information concerning Amount, base and percent.

www.themathpage.com/ARITH/percent-of-a-number.htm

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Answer 2

Divide the first number by the second number, and multiply the result times 100

Example:
3/5 = 3 divided by 5 = .6
.6 * 100 = 60 (60%)

Hope that helps!

Brian

Slay the Greek Gods!
http://www.zeuslegacy.com/register.php?ref=136

Answer 3

according to me, percentage means comparing a certain amount from a total amount by 100.
for example, if you say, 300 apples out of 1200 apples are bad apples, 25% of 1200 apples is bad. thus it means that if 300 out of 1200 apples is bad, 25 out of 100 apples is bad.
thus, finding percentage means finding what will be amount out of 100
therefore, formula of finding percentage is
certain amount(x)/total amount(y) *100
(you can take x as 300 apples and y as 1200 apples to understand , in this case, result will be 25%)
if percentage is given and the amount out of a total amount is not given, then the formula is:
percentage/100*total amount
(here, you can take percentage as 25 and total amount as 1200. result will be 300)
these are the basic formulae with a simple example

Answer 4

Say 5 out of 17 people have blue hair- what percentage of them have blue hair? well. . .

5/17 X 100 yields 29.41%

you can know this works because, say 9 out of 18 have blue hair (this is obviously 1/2 or 50%) then:

9/18 X 100 yields 50%

Hope this helps!

Answer 5

you have to know that one percent is 1/100 part
yhus 7% = 7 * 1/100

so 1 % of 900 = 9 bcus 900*1/100 = 9
7% of 900 = 900*7/100 = 63

and bthat is all

Answer 6

just use the porpotion..... small number/bigger number=x/100