Trachtenberg Speed System of Basic Mathematics (inbunden)

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Matematik

Format: E-bok
Filformat: EPUB med LCP-kryptering (0.0 MB)
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Nedladdning: Kan laddas ned under 24 månader, dock max 6 gånger.
Språk: Engelska
Antal sidor: 272
Utgivningsdatum: 2011-03-01
Förlag: Profile
Översättare: Ann Cutler, Rudolph McShane
ISBN: 9780285639959

Trachtenberg Speed System of Basic Mathematics E-bok

Name: Trachtenberg Speed System of Basic Mathematics
Price: 136.00 SEK
Availability: InStock
Author: Jakow Trachtenberg
ISBN: 9780285639959

av Jakow Trachtenberg

E-bok (LCP), Engelska, 2011-03-01

136

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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.