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Thread: Mental maths - tips, tricks and shortcuts
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Old 1st January 2013 | 21:03
  #47 (permalink)  
Tidbinbilla
 
Joined: Sep 2006
Posts: 733
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From: DSS-46 (Canberra Region)
Smile
If you wish to carry on like a bunch of school children - you will be treated as such.
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