Pre-Algebra Demystified

It should be pointed out that 100% means^100100 or 1.

Changing Percents to Decimals

To change a percent to a decimal, drop the percent sign and move the decimal

point two places to the left.

EXAMPLE

Write 8% as a decimal.

SOLUTION

8%¼0.08

Math Note: If there is no decimal point in the percent, it is at the

end of the number: i.e., 8%¼8.0%.

EXAMPLE

Write 63% as a decimal.

SOLUTION

63%¼0.63

EXAMPLE

Write 253% as a decimal.

SOLUTION

253%¼2.53

EXAMPLE

Write 43.5% as a decimal.

SOLUTION

43.5%¼0.435

EXAMPLE

Write 0.2% as a decimal.

106 CHAPTER 6 Percent