The presentation of percentages is easy. By studying this slide document, you can easily understand percentages and there are easy tricks that you can apply to quickly calculate percentages.

1. Percentage (%)
is Easy
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2. Percentage
The term "percentage" was adapted from the Latin word "per centum", which
means "by the hundred". Percentages are fractions with 100 as the denominator.
Percent = per 100
Ten Percent (10%) means 10 per 100 = 0.1
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3. What is the Percentage?
The percentage is a fraction or a ratio in which the value of the whole (denominator) is
always 100. This percent symbol can always be replaced with "divided by 100" to convert
it into a fraction or decimal equivalent.
Examples of Percentage
10% = 10/100 ( = 1/10 (or) 0.1)
25% = 25/100 ( = 1/4 (or) 0.25)
12.5% = 12.5/100 ( = 1/8 (or) 0.125)
50% = 50/100 ( = 1/2 (or) 0.5)
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4. Percentage Formula
Percentage = (Value/Total Value)×100
Example:
50 is what percent of 500?
= (50/500) x 100
= 0.1 x 100
= 10 %
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5. Calculate the percentage of a number
Percentage of a number = (percent/100) × value
Example:
What is 10% of 500?
= (10/100) x 500
= 0.1 x 500
= 50
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6. Percentage Tricks
Tricks:
1% Percentage Trick
To find 1% of a number, divide
it by 100.
10% Percentage Trick
To find 10% of a number,
divide it by 10.
20% Percentage Trick
To find 25% of a number,
divide it by 5.
25% Percentage Trick
To find 25% of a number,
divide it by 4.
50% Percentage Trick
To find 50% of a number,
divide it by 2.
75% Percentage Trick
Find 25% and then multiply
that by 3.
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