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Fractions

I don't believe in memorization but I do believe in some remembering. I know this sounds contradictory...so sue me for it. All I know is that remembering the table below has gotten me through a whole lot of mathematical and arithmetical problems. It lets me "see through" things sometimes because

  • Frequently there are insights buried in the relationships between numbers.
  • They give me lots of shortcuts which helps me see whether the answer I got makes sense.

I know...you have a calculator...and I use them too...but it surely is useful having some of this stuff right up there in your noodle where you can access it any time you want.

fraction

decimal

%

fraction

decimal

%

9/10

0.900

90

1/6

0.167

16 2/3

8/9

0.889

88 8/9

1/7

0.143

14 2/7

7/8

0.875

87 1/2

1/8

0.125

12 1/2

5/6

0.833

83 1/3

1/9

0.111

11 1/9

4/5

0.800

80

1/10

0.100

10

3/4

0.750

75

1/11

0.0909

9 1/11

2/3

0.667

66 2/3

1/12

0.0833

8 1/3

5/8

0.625

62 1/2

1/15

0.0667

6 2/3

3/5

0.600

60

1/16

0.0625

6 1/4

1/2

0.500

50

1/20

0.0500

5

2/5

0.400

40

1/25

0.0400

4

3/8

0.375

37 1/2

1/30

0.0333

3 1/3

1/3

0.333

33 1/3

1/32

0.03125

3 1/8

1/4

0.250

25

1/40

0.0250

2 1/2

1/5

0.200

20

1/50

0.0200

2

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This page was last modified on Fri, August 30, 2002 04:56 PM