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3:25
This is a magical way of doing super-fast mental math. Learn to calculate faster than the speeding calculator...........
12 Sep 2007
191592
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19:07
Mentally solve quadratic equations and inequality. Get A grade easily in AS level Maths exam. OCR edexcel maths past paper solution. Core c1 c2 c3 c4 m1 s1 units . Lower sixth form maths help and A-level Maths revision
24 Aug 2008
61994
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1:55
Learn to do square of any number in your head, Leave Comments of what u think of this video glad2teach link : *******www.metacafe****/watch/791048/fast_math_trick/
5 Sep 2007
31455
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