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2.1 Percent of




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Percent of a number

To calculate the percent of a number, you simply multiply the fraction version of the percentage with the number.

For example, 51% of 300 is, i.e.:

Alternatively, you can multiply the decimal version of the percentage with the number, i.e.:

Remember that “of” (in English) means multiply in mathematics.

Percent of a composition

If there are 14 girls in a class of 25, the percentage of class that are girls can be found by converting the fraction 14/25 into a percentage. That is:

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