En savoir plus sur le livre
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 '
Achat du livre
The Trachtenberg speed system of basic mathematics translated and adapted by Ann Cutler and Rudolph McShane, Ann Cutler, Rudolph McShane
- Langue
- Année de publication
- 1962
- product-detail.submit-box.info.binding
- (rigide)
Nous vous informerons par e-mail dès que nous l’aurons retrouvé.
Modes de paiement
Personne n'a encore évalué .