Has anyone played with or know much about this? (the Trachtenberg System)

[Dg1]

I found this at a bookstore awhile back it seemed interesting. The way the system came about was a cool story. Has anyone had any experience with trying to learn it, or know anything about it?

 

[mmm4444bot]

NOTE: For readers who are not familiar with the Trachtenberg System, here are some informational links.

Trachtenberg system - Wikipedia

en.wikipedia.org

How to Use the Trachtenberg Method: 3 Formulas

Quick, easy techniques to add, multiply, and divide without breaking a sweat Do you wish you could do more math in your head? Do you find conventional arithmetic difficult? Then the Trachtenberg method is perfect for you! Developed by...

www.wikihow.com