Mental Maths Preview
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Comments by pengyluv
- 03/25/2011
The methods are sound but there are typos all over the place in the calculations.
by Dominic
- 09/29/2011
GoodToo bad its only 3 or 4 free chapters
by Nicole
- 03/26/2011
Amazing tricks
by ana
- 03/10/2011
Great! I wish it would be more than a preview though...
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