PERCENTS. A percent (%) is a special type of decimal form. Percent
means "per one hundred." It tells how many hundredths. (Think of
cents. One cent is 1/100 [1%] of a dollar.)
For example, 24 percent means 24/100, which is 0.24.
The number to be rounded
(9) is odd, so you round up
To change from a percent to a decimal, simply move the decimal point
(add 1 to the number to be
two pieces to the left. If no decimal point is shown, put one after the last
digit. Add zeroes to the left of the percentage number if needed. For
example, 2% = 0.02.
Change these percent forms to their decimal forms.
In math problems, the word "of" frequently indicates that you are to
multiply. Solve these problems by changing the percent to a decimal
and multiplying. Round any answer involving money to the nearest cent.
a. 0.20 (or 0.2)
a. 20% of 0
(Change the fraction to a
b. 8.5 % of 5
decimal form, then move
the decimal point 2 places
to the left.)
c. 150% of 10
d. 1/2 % of 1000
e. 3.50 (or 3.5)