Math 7 In-Class Worksheet
Lesson 9.1 Percents and Fractions
Name_________________________
Percent (%) means per 100. To change a percent to a fraction, write the percentage in
the numerator and 100 in the denominator. Simplify if possible!
17
65 5 13
113
13

1
Examples: 17% =
65% =
113% =
100
100 5 20
100 100
Try These!
1.) 95% _____
2.) 2% _______
3.) 60% ______
4.) 88% ______
5.) 45% _____
6.) 27% _______
7.) 8% ______
8.) 21% ______
9.) 66% _____
10.) 42% _______
11.) 50% ______
13.) 59% _____
14.) 25% _______
15.) 150% ______
16.) 85% ______
17.) 195% _____
18.) 43% _______
19.) 30% ______
20.) 32% ______
12.) 84% ______
Since percent means “per 100”, to change a fraction to a percent, you need
to find an equivalent fraction with a denominator of 100. The percentage
will be the numerator! Here are three ways you can use:
●Equivalent fractions: Multiply the denominator by the whole number that will give
you 100 as the new denominator. Multiply the numerator by that same whole
number.
(You can not always use this method  )
Examples :
2 20 40

 40%
5 20 100
31 4 124

 124%
25 4 100
●Make a proportion with the fraction and 100 in the denominator of the second
ratio. (This way will always work!)
Examples:
5
x

8 100
12
x

7 100
8x = 500
8
8
7x = 1200
7
7
3
x = 171 %
7
x = 62.5%
● Multiply the fraction by 100. (This way will always work!)
Examples:
2 100 40

 40%
5 1
1
5 100 125

 62.5%
8 1
2
Try These! Use whichever method you like!
1.)
17
25
2.)
3
4
5.)
57
100
6.)
23
40
3.)
7.)
5
16
9
10
4.)
4
9
8.)
17
12