Decimal-Percent
Percent-Decimal
Fraction-Decimal
Decimal-Fraction
Percent <--> Fraction
Percent of...
100

0.2

20%

100
55%
.55
100

3/4

0.75

100

0.1

1/10

100

30%

3/10 or 30/100

100

10% of 50

5

200

0.06

6%

200
34.7%
.347
200

3/5

0.6

200

0.13

13/100

200

50%

1/2 or 50/100

200

100% of 67

67

300

0.875

87.5% OR 88%

300

3%

0.03

300

1/100

0.01

300

0.85

17/20  or 85/100

300

5%

1/20  or 5/100

300

5% of 200

10

400

0.66666666666666666666666.........

66.7% or 67%

400

150%

1.5

400

1/3

0.3333333333333333

400

0.04

4/100

400

17%

17/100

400

30% of 120

36

500

What is the general rule for converting a decimal into a percent?

Times by 100

500

What is the general rule for converting a percent into a decimal?

Divide by 100

500

When in doubt, what is a general rule for converting a fraction into a decimal?

Divide top by bottom

500

What is a general rule for converting a decimal into a fraction?

Times by 100, then show over 100

500

102%

102/100 or 51/50 or 1 1/50

500

22% of 55

=10%+10%+1%+1%

= 5.5+5.5  +  0.55+0.55

= 12.1

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