Erhältlich:
Nicht auf Lager
Buch (Softcover): Fachbuch
The Trachtenberg Speed System of Basic Mathematics
Produkt bewerten
Verlag:
Souvenir Press Unsere-Artikel-Nr.: K7D33RL
EAN: 9780285629165
Erhältlich:
Nicht auf Lager
Zustellung: Mi, 29.07.2026
Versand: Kostenlos
CHF 23.40
Beschreibung
Do high-speed, complicated arithmetic in your head using the Trachtenberg Speed System. Ever find yourself struggling to check a bill or a payslip. With The Trachtenberg Speed System you can. Described as the 'shorthand of mathematics', the Trachtenberg system only requires the ability to count from one to eleven. Using a series of simplified keys it allows anyone to master calculations, giving greater speed, ease in handling numbers and increased accuracy. Jakow Trachtenberg believed that everyone is born with phenomenal abilities to calculate. He devised a set of rules that allows every child to make multiplication, division, addition, subtraction and square-root calculations with unerring accuracy and at remarkable speed. It is the perfect way to gain confidence with numbers.
Spezifikationen
Sprache
- Englisch
Autor
- Trachtenberg Jakow
- Cutler Ann
- McShane Rudolph
Erscheinungsjahr
- 1989
Format
- Buch (Softcover)
Detailformat
- Taschenbuch
Anzahl Seiten
- 272