The Trachtenberg Speed System of Basic Mathematics
Bloomsbury Publishing PLC
Praeger Publishers Inc
4th February 1982
United States
Tertiary Education
Non Fiction
513.92
Hardback
272
Width 140mm, Height 216mm
454g
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.