The Trachtenberg Speed System Of Basic Mathematics
The complete system of the Trachtenberg method of mathematics which makes possible high-speed arithmetical calculations with a remarkable degree of accuracy. This method is not only speedy but simple. Once one has mastered the rules, lightning calculation is as easy as reading a story. It looks like magic, but the rules are based on sound logic.
- Request Code
- ZLIBIO827256
- Published
- 1999
- Publisher
- Souvenir
- Pages
- 269
- Language
- English
- Format
- DJVU
- Edition
- New edition
- ISBN-13
- 9780285629165
- ISBN-10
- 0313232008