| Author/Contributor(s): | |
| Publisher: | Praeger |
| Date: | 02/04/1982 |
| Binding: | Hardcover |
| Condition: | NEW |
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.