Chapter 1 Review

1
Chapter 1Review
2
What percent of the figure is shaded?
40 is white, 60 is green.
3
What percent of the figure is each triangle?
There are 16. 1 triangle is 1/16. As a decimal
it is 0.0625. As a percent is it 6.25
4
Explain how to change a fraction to a percent.
Change the fraction to a decimal by dividing the
top number by the bottom number. Change the
decimal you have to a percent by moving the
decimal two places to the right.
5
Explain how to change a percent to a fraction.
Put the percent over 100 (without the ) then
simplify.
6
Explain how to change a decimal to a percent.
To change a decimal to a percent move the decimal
point over two places to the right. Add percent
sign ().
7
Explain how to change a percent to a decimal.
To change a percent to a decimal, move the
decimal point over two places to the left. Take
away the percent sign ().
8
What is a central angle on a circle graph?
9
What is the measure of the central angle for the
magenta section?
The magenta sections central angle is 154.8º.
10
What is the measure of the central angle for the
gold section?
The gold sections central angle is 129.6º.
11
What is the measure of the central angle for the
red section?
The red sections central angle is 75.6º.
12
What is this fraction as a percent?
It is 1.125 as a decimal, move the decimal two
places to the right, and that give you 112.5
13
What is this fraction as a percent?
It is 0.125 as a decimal, move the decimal two
places to the right, and that give you 12.5
14
What is this fraction as a percent?
It is 0.25 as a decimal, move the decimal two
places to the right, and that give you 25
15
What is this 0.297 as a percent?
Move the decimal two places to the right. 29.7
16
What is this 0.08 as a percent?
Move the decimal two places to the right. 8
17
What is this 0.3 as a percent?
Move the decimal two places to the right. 30
18
What is this 0.375 as a percent?
Move the decimal two places to the right. 37.5
19
What is this 12.6 as a percent?
Move the decimal two places to the right. 1260
20
An imaginary country charges 12.5 tax on all
purchases. What fraction represents 12.5
21
What percent of the figure is each triangle?
22
What percent of the figure is shaded?
36 is white, 64 is green.