The Trachtenberg Speed System of Basic Mathematics, Paperback / softback Book

The Trachtenberg Speed System of Basic Mathematics Paperback / softback


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 '


  • Format: Paperback / softback
  • Pages: 272 pages
  • Publisher: Souvenir Press Ltd
  • Publication Date:
  • Category: Mathematics
  • ISBN: 9780285629165



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