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2. Multiplication table - Wikipedia

   en.wikipedia.org/wiki/Multiplication_table

   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 ...

3. Vedic square - Wikipedia

   en.wikipedia.org/wiki/Vedic_square

   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).

4. Worksheet - Wikipedia

   en.wikipedia.org/wiki/Worksheet

   In accounting, a worksheet is, or was, a sheet of ruled paper with rows and columns on which an accountant could record information or perform calculations. These are often called columnar pads, and typically green-tinted. In computing, spreadsheet software presents, on a computer monitor, a user interface that resembles one or more paper ...

5. Trachtenberg system - Wikipedia

   en.wikipedia.org/wiki/Trachtenberg_system

   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.

6. Al Roker Celebrates His 70th Birthday with Surprises on the ...

   www.aol.com/lifestyle/al-roker-celebrates-70th...

   Al Roker is kicking off his seventh decade of life with a bang!. As he turned 70 on Tuesday, Aug. 20, the veteran broadcaster's Today colleagues prepared a surprise celebration for him on the NBC ...

7. 5 Editor-Approved Books a Middle Schooler Will Love

   www.aol.com/5-editor-approved-books-middle...

   Zora & Me, by Victoria Bond and R.R. Simon. This beautifully written novel is narrated by Zora Neale Hurston’s fictionalized childhood best friend, Carrie, who just like every other child in her ...