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Thread: Mental maths - tips, tricks and shortcuts
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Old 30th December 2012 | 23:07
  #41 (permalink)  
Capn Bloggs
 
Joined: Mar 2002
: ATPL
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From: Seat 1A
Why multiply by 5 when you can divide by 2?
My method of choice.
(Not forgetting to x 10, of course! )
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