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.
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Specifications
Language
English
Publisher
Souvenir Press
ISBN
9780285639959
Publication Date
2011-01-03
File Size
4.54 MB
Ratings & Reviews
3.8
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