It’s almost a guarantee that there will be multiple questions on the GED math test which will test your understanding of percents (often represented by the symbol %). The first thing you should know about percents is that, although they might look like whole numbers, they almost always represent a part of a whole, just like fractions and decimals.
For example, a credit card’s interest rate (APR) might be 11%. Although 11 is a whole number 11% is actually equal to 0.11. So if you borrowed $500 on your credit card, to calculate the amount you owe in interest, 11%, just multiply 500 by 0.11, which is 55. You would owe $55 dollars in interest.
11%, as we said, is equal to 0.11. You could also write 11% as a fraction: 11/100. When you change a percent to a fraction, the denominator will always be 100. This is because percents always represents parts of one hundred. The table below illustrates how the same values can be represented by percents, fractions and decimals.
More about percents:
Changing Percents to Decimals and Decimals to Percents
Comparing and Ordering Fractions, Decimals and Percents
Changing Percents to Fractions and Fractions to Percents
Word Problems with Percents