The complete system of the Trachtenberg method of mathematics which makes possible high-speed arithmetical calculations with a remarkable degree of accuracy.
This method is not only speedy but simple. Once one has mastered the rules, lightning calculation is as easy...
Edition Details
Format:Hardcover
Language:English
ISBN:0313232008
ISBN13:9780313232008
Release Date:February 1982
Publisher:Praeger
Length:272 Pages
Weight:1.06 lbs.
Dimensions:0.9" x 5.8" x 8.6"
Format: Hardcover
Condition:
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The Trachtenberg Speed System of Basic Mathematics
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