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Percent of a Number

In this video, we will be learning how to find a percent of a number using proportions.

In math, “of” means multiply

Percent Formula: \frac{Percent}{100}=\frac{Part (is)}{Whole(of)}

For Example:

What is 8% of 40?

\frac{8}{100}=\frac{x}{40}\leftarrow First we cross-multiply

\frac{320}{100}=\frac{100x}{100}\leftarrow Then we divide by 100 on both sides to isolate x

3.2=x

 

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