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The Trachtenberg speed system of basic mathematics

By: Trachtenberg, Jakow Cutler, Ann(Translated by) McShane, Rudolph(Translated by)

0285629166 / 9780285629165
Paperback
513
29/06/1989
11 in stock Need More ?
England
22 cm 208p.
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Reprint. This translation originally published: New York: Doubleday, 1960; London: Souvenir, 1962.

First developed during WW2, the Trachtenberg speed system makes possible high-speed arithmetical calcula tions with a remarkable degree of accuracy.

The system has e ven been known to beat computer calculations - in some insta nces - in terms of speed '

BIC:

PB Mathematics

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