1. Percents, Fractions, and Decimals

2. Vocabulary
A percent is a ratio that compares a number to It means “per 100.”
49 out of 100 is 49%.

3. Changing Fractions to Percents
Divide the numerator by the denominator to get a decimal.
Change the decimal to a percent by moving the decimal point to the right or multiply by 100. 6
0.24
24% 25

5. Changing Decimals to Percents
Move the decimal point two spaces to the right, and add a % symbol (this is the same as multiplying by 100).
34% 1
.34
100%
19%
.19
.125
12.5% .6
60%

6. Writing Percents as Fractions
Place the percent in a fraction with a denominator of 100.
Simplify the fraction.
26% 26 13
100 50 75 3
75%
100 4

7. Writing Percents as Decimals
Imagine a decimal point in the place of the percent sign, and move the decimal two spaces to the left (the same as dividing by 100).
26%
.26
40%
.40 .4
.07 7%