Cracking The SAT Premium

These show up all the time, so go ahead and memorize them.

0.01    =       =   1   percent

0.1         =                   =   10  percent

0.2         =                       =   20  percent

0.25    =                   =   25  percent

0.5         =                   =   50  percent

0.75    =                   =   75  percent

Converting Percentages to Fractions

To convert a percentage to a fraction, simply put the percentage over 100 and reduce:

80  percent =   

Another Way

You can also    convert

fractions   to  percentages

by  cross-multiplying.

4 x =   3(100)

x   =   75

Converting Fractions to Percentages

Because a percentage is just another way to express a fraction, you shouldn’t be surprised to see how
easy it is to convert a fraction to a percentage. To do so, simply use your calculator to divide the top of
the fraction by the bottom of the fraction, and then multiply the result by 100. Here’s an example:

Problem: Express as a percentage.