This revolutionary new system, as developed by Jakow Trachtenberg and translated and adapted by Ann Cutler and Rudolph McShane, makes possible high-speed arithmetical calculations with a remarkable degree of accuracy. This is the authorized edition that introduces the complete system to the American public.
The Trachtenberg method employs arithmetical procedures radically different from the conventional methods with which we all have long been familiar. For example, there are no multiplication tables and no long division as we know it. To add long columns of numbers we need not count higher than eleven. In fact, one needs only to be able to count to eleven in order to master the entire Trachtenberg system. Based on a series of simplified keys, the method is amazingly effective and easily grasped. Once mastered, its benefits are greater speed, greater ease in handling numbers, and greater accuracy.
In Switzerland, where the Trachtenberg system has been thoroughly tested, it has been hailed as the "shorthand of mathematics", shortening the time for mathematical computations by 80 per cent and, because of its rapid checking method, assuring 99 per cent accuracy a truly revolutionary method that will take both time and drudgery out of mathematical computation.
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