The Trachtenberg Speed System of Basic Mathematics
EAN 9780285629165 Priser opdateret 8. oktober 2026 kl. 12.46
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139,95 kr.hos Saxo DK
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Om produktet
Beskrivelse fra Saxo DK
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
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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.
Specifikationer
- Mærke
- Jakow Trachtenberg
- EAN
- 9780285629165
- Butikker
- Saxo DK
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