Relating Fractions, Decimals, and Percents
Estimating and Calculating Percents
Multiplying to find percents
Drawing Circle Graphs
Dividing to find percents
100
Write these fraction as a percent:
1/4 ; 3/10
25% ; 30%
100
Find 10% of each number:
47
298
4.7
29.8
100
Find:
20% of 90
40% of 90
18
32
100
Draw a circle graph to represent favorite ice cream flavor among 20 year 7 students.
Flavor Students
Chocolate: 10
Vanilla 5
Strawberry 5
Brown: Chocolate
Blue: Vanilla
Green: Strawberry
100
If 1/4 is 10. What is 100%?
40
200
Write these fractions as a percent:
7/5 ; 3/4
140% ; 75%
200
Estimate 49% of 350.
About 175.
200
Find:
5% of 1.0
30% of 1.0
0.05
0.30
200
If 50% of the students in Maple Bear prefer Math than other subjects, which angle the students that prefer Math will make in a circle graph?
180 degrees.
200
45% is 90. What is 100%?
200
300
Write each fraction as a decimal and percent:
8/20
14/5
14/25
0.4 (40%)
2.8 (280%)
0.56 (56%)
300
Estimate 149% of 60
90.
300
Find 130% of $1.00
Find 150% of $1.50
$1.30
$2.25
300
If 1000 teenagers answered this survey. How many prefer Rock and roll (13%) ?
130 people prefer Rock and roll!
300
70% of Hesly's height is 140 cm. How tall is Hesly?
200 cm = 2m
400
Write each number two other ways:
0.18
0.35
3/8
18% (18/100)
35% (35/100)
0.375 (37.5%)
400
A game costs $29.99. The sales tax is 15%. Estimate the cost of game.
About $34.50.
400
Calculate each percent of 52.3
2% 20% 200%
1.046 10.46 104.6
400
If the total area of Earth's Land is about
1 200 000 000 km2. What is the approximate area of Asia and Africa altogether? 
600 000 000 km2
400
At Maple Bear School, 280 students participate in a walk for charity. That is 70% of the students in the school. How many students attend Maple Bear school?
400 students
500
Suppose this pattern is continued on a hundred chart. The numbers in each pattern are colored red. What percent of the numbers on the chart are red?
1, 3, 5, 7, ...
These are odd numbers. Since, there are 50/100 odd numbers. 50% of the chart is colored red.
500
Edward estimates he has traveled approximately 80 km. The total length of Edward's trip is 430 km.
About what percent does Edward still have left to go?
About 70 - 80%
500
There is a squared table with side 50 cm. The book on this table is 10 cm long and 15 cm width.
What percent of the table is occupied with the book?
6 % of the table is occupied with the book.
500
If the area of Erie Lake is 2 684 km2 . What is the area of Michigan Lake? 
Total area x 0.11 = 2684 km2
Total area = 24 400 km2
Area Michigan: 0.23 x 24 400 km2
Area Michigan = 5 612 km2
500
This spring, 26 dogs were adopted from the local animal shelter. This is 130% of the number of dogs that were adopted last spring.
How many dogs were adopted last spring?
20 dogs.