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Fraction short cuts

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Joined: 22 Jul 2003
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Fraction short cuts [#permalink] New post 04 Aug 2003, 13:16
Hi all,

Following are 2 short cuts that you may like.

1. Dividing by 25 - multiply by 4 and divide by 100

3/25 = 3*4/25*4 = 12/100 = 0.12

2. Muitiplying by 25 - divide the # by 4 and myltiply by 100

16*25 = 16/4 * 100 = 4*100 = 400
Fraction short cuts   [#permalink] 04 Aug 2003, 13:16
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