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Old 05-12-2005, 04:30 PM
Porcupine Porcupine is offline
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Join Date: Dec 2002
Location: North Carolina
Posts: 201
Default Re: Cool math shortcuts

Unless I'm missing something>

I'd make a = 3 to square 37, so 34*40 + 9 = 1369.

Thanks Homer!

edit: Homer responded the same time I did, but I think that 34*40 + 9 (basically 34*4 + 9) is easier to do quickly in your head than 37*37.
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