1. Percents

2. A percentage is a special fraction.
What is a Percentage?
A percentage is a special fraction.
The % says, “per hundred.”
For example, 47%, is simply another way of writing the fraction 47/100

3. Writing Decimals as 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%

4. 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%

5. 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

6. Writing Fractions as 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 (multiply by 100). 6
0.24
24% 25

7. Practice 0.45 0.275 ¾ 1/3 50% (write as decimal and fraction)