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The Trachtenberg Speed System of Basic Mathematics

Fotografii de Rudolph Matas McShane Traducere de Ann Cutler, Rudolph McShane
en Limba Engleză Hardback – 31 ian 1982

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.

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Specificații

ISBN-13: 9780313232008
ISBN-10: 0313232008
Pagini: 272
Dimensiuni: 147 x 218 x 24 mm
Greutate: 0.42 kg
Editura: Praeger

Descriere

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.