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Trachtenberg system. The Trachtenberg system is a system of rapid mental calculation. The system consists of a number of readily memorized operations that allow one to perform arithmetic computations very quickly. It was developed by the Russian engineer Jakow Trachtenberg in order to keep his mind occupied while being in a Nazi concentration camp.
Multiplication table. In mathematics, a multiplication table (sometimes, less formally, a times table) is a mathematical table used to define a multiplication operation for an algebraic system. The decimal multiplication table was traditionally taught as an essential part of elementary arithmetic around the world, as it lays the foundation for ...
Vedic square. In Indian mathematics, a Vedic square is a variation on a typical 9 × 9 multiplication table where the entry in each cell is the digital root of the product of the column and row headings i.e. the remainder when the product of the row and column headings is divided by 9 (with remainder 0 represented by 9).
September 13, 2024 at 7:32 PM. Vice President Harris on Friday pledged to end “unnecessary degree requirements” for some federal jobs as she courted middle-class voters in the critical ...
RJ Harvey rushed for three of his four touchdowns in the first half to help power UCF to a 45-14 win over Sam Houston Saturday for its second straight win at home to start the season. Harvey had ...
Check If It's a First Edition. Open the book to the copyright page, says Mann. For a book to be worth anything significant, you typically have to have a first-edition copy from the original ...
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