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Part/Whole = Percent/100

The symbol used to show percent is “%” so 48 percent would be 48%. The “48” is the “part” and the “%” is the whole which means that 48% can also be shown as 48/100.

__Converting Percentages to Decimals__:

To convert a percentage to a decimal is probably the easiest problem to solve in math. All that is need is division. Looking at the percentage listed above, i.e., 48%, the 48 is divided by the number “100”. The “%” symbol used in percentage numbers always represents the number “100”. So to convert 48% to a decimal you would state the problem as: 48 ÷ 100 = 0.48.

1.

171% = ___

.171

17.1

1.71

10.71

Take the percent number 171 and divide it by the % which is the same as 100 as follows: 171 ÷ 100 = 1.71. Answer (c) is the correct answer

2.

16% = ___

.016

.16

1.6

1.06

Take the percent number 16 and divide it by the % which is the same as 100 as follows: 16 ÷ 100 = .16. Answer (b) is the correct answer

3.

270% = ____

27.0

.27

2.7

.027

Take the percent number 270 and divide it by the % which is the same as 100 as follows: 270 ÷ 100 = 2.7. Answer (c) is the correct answer

4.

535% = ___

.535

5.35

53.5

.0535

Take the percent number 535 and divide it by the % which is the same as 100 as follows: 535 ÷ 100 = 5.35. Answer (b) is the correct answer

5.

180% = ____

1.8

.18

18.0

.018

Take the percent number 180 and divide it by the % which is the same as 100 as follows: 180 ÷ 100 = 1.8. Answer (a) is the correct answer

6.

349% = ___

3.49

34.9

.349

.035

Take the percent number 349 and divide it by the % which is the same as 100 as follows: 349 ÷ 100 = 3.49. Answer (a) is the correct answer

7.

48% = ___

4.8

4.08

.048

.48

Take the percent number 48 and divide it by the % which is the same as 100 as follows: 48 ÷ 100 = .48. Answer (d) is the correct answer

8.

212% = ___

2.12

21.2

.212

.0212

Take the percent number 212 and divide it by the % which is the same as 100 as follows: 212 ÷ 100 = 2.12. Answer (a) is the correct answer

9.

125% = ___

.125

1.25

12.5

.13

Take the percent number 125 and divide it by the % which is the same as 100 as follows: 125 ÷ 100 = 1.25. Answer (b) is the correct answer

10.

99% = ___

9.09

9.9

.099

.99

Take the percent number 99 and divide it by the % which is the same as 100 as follows: 99 ÷ 100 = .99. Answer (d) is the correct answer

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