I have an indian edition of this book - http://www.amazon.com/Trachtenberg-Speed-System-Basic-Mathematics/dp/0313232008 http://www.amazon.com/Trachtenberg-Speed

I have an indian edition of this book - http://www.amazon.com/Trachtenberg-Speed-System-Basic-Mathematics/dp/0313232008 http://www.amazon.com/Trachtenberg-Speed-System-Basic-Mathem.... I highly recommend exploring this method - its quite easy and the rules are simple to remember.