How do you tackle math problems involving percents?

Answer 1

The word percent means one part in a hundred. One percent, for example, is exactly one part in a hundred. Fifty-two percent is 52 parts in a hundred, which can be expressed as the proportion 52/100, which can be written as the decimal 0.52. So, when you see a proportion expressed as a percent -- such as 52% -- you can think of it as 0.52. In other words, all you do is move the decimal point two places to the left of the percent sign. 13% = 0.13
23% = 0.23
99% = 0.99
130% = 1.30 So, doing math with percents is no harder than doing math with decimals. If you have to calculate 25 percent of, say, 120, just multiply 120 by the decimal equivalent of 25%, like this: 120 x 0.25 = 30. In other words, 25 percent of 120 is 30. That's all there is to it.