The document explains the concept of percentage, derived from the Latin 'per centum', and provides a formula for calculating percentages. It illustrates how to convert percentages into fractions or decimals and includes tricks for quickly finding common percentages of a number. Examples and calculations are provided to enhance understanding of the topic.

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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