Notes 9.5
Name_________________
Example
How do I use
percents to interpret
and make circle
graphs?
What number is
20% of 110?
1. To solve percent equations
use the following formula.
“What percent of a total is a
number?”
What percent of a total is a number?
2. Fill in the information you
know directly under the
formula.
What percent of a total is a number?
20% x
110
= n
3. Change the percent to a
decimal and multiply to
solve.
What percent of a total is a number?
20% x
110
= n
.20
x
110
= 22
“of” means to multiply
“is” means =
Key Vocabulary
Circle graph – a way to display data as
sections of a circle
Ray – part of a line beginning with a
point and extending in one direction
without end
Angle – two rays that begin at a
common point; measured in degrees
Vertex – the common point in an angle
(vertices – plural)
Your turn
What number is
12% of 50?