"Secrets of Mental Math" by Arthur Benjamin & Michael Shermer

After watching an interesting presentation from Professor Arthur Benjamin on the TED.com website who claims to be a mathemagician I was prompted to get a hold of a copy of "Secrets of Mental Math". The book is interesting in that it has forewords by "The Amazing Randi" (aka James Randi) and "The Science Guy" (aka Bill Nye).

I've spent the past month working my way through the parts of this book that intrigued me and must say that the tips and tricks really do work. I'm not the a math nut by nature but something about the video struck me and indicated that I should pickup a copy of Secrets of Mental Math. The good news is that Benjamin and Sherher approach the topic with a light hearted easy to follow style that makes it easy to understand how to perform these calculations in your head. My goal in starting this book was to sharpen my math skills so that I spent less time calculating and more time thinking about what the result of the calculation meant to the situation I was considering.

The only thing that I wish the book focused more on was the ability to retain and remember the products of the calculations you're working on. Typically, the techniques involve simplifying the problem at hand into a series of smaller problems - the only hitch with this is that you can end up getting thrown off course its often hard to remember the interim by-products meaning you need to start all over.

Bottom-line I HIGHLY recommend this book for anyone that wants to be sharper on their feet and handle calculations without being reliant on having a pencil & paper or a calculator at hand.