Question

How can you quickly calculate 20 percent of any bill amount?

Answer 1

multiply the amount by 0.20

Answer 2

First, convert the percent into a decimal. To do this, simply more the % sign two places to the left and make it into a decimal point.

20% = 0.20

Then we will let x be our bill amount.

Then multiply 0.20 and x together to get your answer.

So, 0.20 * x is your answer.