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Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

Math Word Problems - GED, PSAT, SAT, ACT, GRE Preparation
8.3 Percentages

To find 50% of a number, find half of that number.
To find 25% of a number, find one quarter of that number.
To find 10% of a number, divide the number by ten.

Examples:
50% of 50 is 25
50% of 60 is 30
50% of 200 is 100
50% of 12 is 6
25% of 40 is 10
25% of 16 is 4
25% of 100 is 25
25% of 240 is 60
10% of 10 is 1
10% of 20 is 2
10% of 30 is 3
10% of 100 is 10

Note the following relationships between percentages and fractions:
100% = 1 whole
50% = 1/2 = one half
25% = 1/4 = one quarter
10% = 1/10

You can use the above facts to solve problems involving other percentages.
Examples:
Since 10% of 120 is 12, 30% of 120 is 3 x 12 (3 times 12) = 36
Since 25% of 100 is 25, then 75% of 100 is 3 x 25 (3 times 25) = 75


Directions: Answer the following questions. Also write at least ten examples of your own.
Q 1: A dress is selling for $100after 20% discount. What is the original selling price?
$200
$80
$120
$125

Q 2: If 10% of 130 is 13, then 30% of 130 is ______.
36
43
24
39

Q 3: What number is 10 percent greater than 20?
10
20
24
22

Q 4: Bob scored 40 points out of 60 in his math test. Ron scored 50% in the same test. Who did better?
Ron
Neither
Bob

Q 5: Jill bought a notebook for $1.50 plus 6% sales tax. How much did she pay?
$1.75
$1.59
$1.20
$1.56

Q 6: A television is on sale for $900. If the sale price is 10 % less than the regular price. What was the regular price?
$1100
$800
$910
$1000

Q 7: If the sales tax on a $30.00 item is $1.80, what is the sales tax rate?
5%
8%
6%
10%

Q 8: 70% of the children in a school buy lunch at the cafeteria and the rest bring their lunch from home. What percentage of the children bring lunch from home?
unknown
32%
40%
30%

Question 9: This question is available to subscribers only!

Question 10: This question is available to subscribers only!


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