6.4.10 Percent of a Number

We can find the percent of a number in multiple ways. We can either turn the percent into a fraction and multiply or we can turn the percent into a decimal (which moves the decimal two places to the left) and multiply.

In this first example, instead of turning the percent into a fraction, we could also turn it into a decimal (which would be 1.45). Once that's done, we can just take 1.45 x 320 and get the answer of 464.

In this example, we could turn the decimal into 25/10000, do a little cross-reduction (the fraction set up for this would be 25/10000 x 58/1).  It is obvious though that in an example like this, turning the % into a decimal is an easier method.