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The Trachtenberg Speed System of Basic Mathematics

The Trachtenberg Speed System of Basic Mathematics

150 kr.

150 kr.

På lager

Ons., 2 juli - man., 7 juli


Sikker betaling

14 dages åbent køb


Sælges og leveres af

Adlibris

Produktbeskrivelse

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.

Varenr.

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Funktioner

Genre

Videnskab & natur

Sprogversion

Engelsk

Bogomslagstype

Paperback

Antal sider

272 Sider

Foreslået køn

Ethvert køn

Skrevet af

Jakow Trachtenberg, Ann Cutler , Rudolph McShane

Udgiver

Profile Books

Udgivelsesdato

June 1989

The Trachtenberg Speed System of Basic Mathematics

150 kr.

150 kr.

På lager

Ons., 2 juli - man., 7 juli


Sikker betaling

14 dages åbent køb


Sælges og leveres af

Adlibris