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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: 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 2: 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?
30%
32%
40%
unknown

Q 3: If 10% of 130 is 13, then 30% of 130 is ______.
43
36
39
24

Q 4: 35% of children in a class are boys. What percentage are girls?
65%
75%
unknown
40%

Q 5: Bob scored 40 points out of 60 in his math test. Ron scored 50% in the same test. Who did better?
Bob
Neither
Ron

Q 6: Eric invited 50 friends to his birthday party. 50% of them could not attend the party. How many friends attended the party?
30
40
25
50

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

Q 8: A television is on sale for $900. If the sale price is 10 % less than the regular price. What was the regular price?
$1100
$910
$800
$1000

Question 9: This question is available to subscribers only!

Question 10: This question is available to subscribers only!


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