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Be a Wizard with Numbers: 101 Ways to Count Yourself Smart. Andrew Jeffrey
Can you multiply and divide by 2 or 10 without pencil and paper? Of course you can. And believe it or not, with just those two skills and a few simple tricks you can perform just about any everyday calculation in your head! That's just a small sample of the kind of number wizardry readers will learn to master in this amazingly entertaining and supremely practical book. The ...more
Paperback, 144 pages
Published December 1st 2009 by Duncan Baird
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