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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 '
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The Trachtenberg speed system of basic mathematics translated and adapted by Ann Cutler and Rudolph McShane, Ann Cutler, Rudolph McShane
- Lingua
- Pubblicato
- 1962
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- (Copertina rigida)
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- Titolo
- The Trachtenberg speed system of basic mathematics translated and adapted by Ann Cutler and Rudolph McShane
- Lingua
- Inglese
- Autori
- Ann Cutler, Rudolph McShane
- Pubblicato
- 1962
- Formato
- Copertina rigida
- Pagine
- 270
- ISBN10
- 0285626787
- ISBN13
- 9780285626782
- Serie
- Descrizione
- 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 '