Viac o knihe
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 '
Nákup knihy
The Trachtenberg speed system of basic mathematics translated and adapted by Ann Cutler and Rudolph McShane, Ann Cutler, Rudolph McShane
- Jazyk
- Rok vydania
- 1962
- product-detail.submit-box.info.binding
- (pevná)
Akonáhle sa objaví, pošleme e-mail.
Platobné metódy
Nikto zatiaľ neohodnotil.