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Speed Mathematics: Secret Skills for Quick Calculation
by Bill Handley
Speed Mathematics empowers readers to make complex calculations in the blink of an eye, all by teaching easy strategies for basic arithmetic. Bill Handley's revolutionary and failsafe methods make it fun to do maths fast while also significantly reducing mistakes.
Paperback, 256 pages
Published October 20th 2003 by John Wiley & Sons
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call me a nerd but this was actually really interesting. It definitely introduced me to a number of clever techniques to approach basic mathematics that I never knew even existed. It was enlightening and quite worth the read especially the lessons on mental calculation which probably didn't stick too well in my head ... way too many numbers. But interesting nevertheless :)