PERCENT OF A NUMBER
PROBLEMS
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Percents into numbers
1. The student should know the fractional equivalent of the following.
| 1. a) 50% |
= |
1
2 |
|
b) 25% |
= |
1
4 |
|
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 |
|
j) 90% |
= |
9
10 |
| |
| 1. k) 20% |
= |
1
5 |
|
l) 40% |
= |
2
5 |
|
m) 60% |
= |
3
5 |
|
n) 80% |
= |
4
5 |
2. Write each of the following as a fraction, or a whole number, or a
2. mixed number.
| 1. a) 79% |
= |
79
100 |
|
b) 3% |
= |
3
100 |
|
c) 60% |
= |
3
5 |
| 2. d) 100% = 1 |
|
1. e) 300% = 3 |
|
f) 350% |
= 3 |
1
2 |
| 2. g) 375% |
= 3 |
3
4 |
|
h) 333 |
1
3 |
% = 3 |
1
3 |
|
i) 480% |
= 4 |
4
5 |
13. How much is
| |
a) 75% of $208? $156 |
|
b) 250% of $16? $40 |
| |
| |
c) 325% of 200? $650 |
|
d) 75% of $37.60? $28.20 |
| |
| |
e) 675% of 400? $2,700 |
|
f) 12.5% of $96.24? $12.03 |
| |
| |
g) 30% of $62? $18.60 |
|
h) 40% of $96? $38.40 |
| |
| |
i) 40% of $55? $22.00 |
|
j) 20% of $148? $29.60 |
| |
| |
k) 20% of $150? $30.00 |
|
l) 70% of $312? $218.40 |
14. 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 |
15. 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 |
Fractional percent
16. What does ½% mean? Half of 1%.
17. Compare the following.
17.
a) Half of $800 = $400
b) ½% of $800 = $4.00
1.8. Calculate mentally from 1%.
18.
a) ½% of $1000 = $5.00
b) ½% of $900 = $4.50
18.
c) ½% of $1200 = $6.00
d) ¼% of $1200 = $3.00
18.
e) ½% of $840 = $4.20
f) ¼% of $840 = $2.10
18.
g) ½% of $1,624 = $8.12
h) ¼% of $1624 = $4.06
18.
i) 10½% of $900 = $94.50
j) 10¼% of $3200 = $328
19. Maria deposited $1,000 in the bank where the interest is 4½%
19. annually. How much interest will she earn? = $45
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