PERCENT OF A NUMBER
PROBLEMS
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Do the problem yourself first!
1. How much is 18.6% of $100? $18.60
2. A store paid $100 for a dress. It raised the selling price by 35%. But
2. one week later it lowered that price by 10%. What was the final
2. selling price?
$121.50. For, 35% of $100 is $35, so the selling price went to $135. 10% of that is $13.50. And $135 − $13.50 = $121.50.
3. The student should know the fractional equivalent of the following.
1. a) 50% |
= |
1 2 |
|
b) 25% |
= |
1 4 |
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c) 75% |
= |
3 4 |
1. d) 12½% |
= |
1 8 |
|
1. e) 33 |
1 3 |
% |
= |
1 3 |
|
1. f) 66 |
2 3 |
% |
= |
2 3 |
1. g) 10% |
= |
1 10 |
|
h) 30% |
= |
3 10 |
|
i) 70% |
= |
7 10 |
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j) 90% |
= |
9 10 |
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1. k) 20% |
= |
1 5 |
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l) 40% |
= |
2 5 |
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m) 60% |
= |
3 5 |
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n) 80% |
= |
4 5 |
4. Write each of the following as a fraction, or a whole number, or a
3. mixed number.
1. a) 79% |
= |
79 100 |
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b) 3% |
= |
3 100 |
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c) 60% |
= |
3 5 |
2. d) 100% = 1 |
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1. e) 300% = 3 |
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f) 350% |
= 3 |
1 2 |
2. g) 375% |
= 3 |
3 4 |
|
h) 333 |
1 3 |
% = 3 |
1 3 |
|
i) 480% |
= 4 |
4 5 |
15. How much is
|
a) 75% of $208? $156 |
|
b) 250% of $16? $40 |
|
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c) 325% of 200? $650 |
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d) 75% of $37.60? $28.20 |
|
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e) 675% of 400? $2,700 |
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f) 12.5% of $96.24? $12.03 |
|
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g) 30% of $62? $18.60 |
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h) 40% of $96? $38.40 |
|
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i) 40% of $55? $22.00 |
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j) 20% of $148? $29.60 |
|
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k) 20% of $150? $30.00 |
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l) 70% of $312? $218.40 |
16. Thirds. How much is
|
a) 33 |
1 3 |
% of 81? 27 |
|
b) 66 |
2 3 |
% of 81? 54 |
|
|
c) 33 |
1 3 |
% of $32.40? $10.80 |
|
d) 66 |
2 3 |
% of $32.40? $21.60 |
17. Calculator problems. How much is
|
a) 33 |
1 3 |
% of $706.14? $235.38 |
|
b) 66 |
2 3 |
% of $706.14? $470.76 |
|
|
c) 33 |
1 3 |
% of $91.15? $30.38 |
|
d) 66 |
2 3 |
% of $91.15? $60.77 |
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Copyright © 2021 Lawrence Spector
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