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2. Mental abacus - Wikipedia

   en.wikipedia.org/wiki/Mental_abacus

   The abacus can be used routinely to perform addition, subtraction, multiplication, and division; it can also be used to extract square and cube [4] roots.

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   Discover the best free online games at AOL.com - Play board, card, casino, puzzle and many more online games while chatting with others in real-time.

4. Trachtenberg system - Wikipedia

   en.wikipedia.org/wiki/Trachtenberg_system

   The method for general multiplication is a method to achieve multiplications with low space complexity, i.e. as few temporary results as possible to be kept in memory. This is achieved by noting that the final digit is completely determined by multiplying the last digit of the multiplicands. This is held as a temporary result.

5. DreamBox Learning - Wikipedia

   en.wikipedia.org/wiki/DreamBox_Learning

   DreamBox Learning Math teaches students grades K-8 various mathematical subjects, such as addition, subtraction, multiplication, division, fractions, geometry, and algebra. The program utilizes an algorithm to determine if the user is able to understand certain lessons.

6. List of Martin Gardner Mathematical Games columns - Wikipedia

   en.wikipedia.org/wiki/List_of_Martin_Gardner...

   A fifth collection of "brain-teasers" 1960 Mar: The games and puzzles of Lewis Carroll: 1960 Apr: About mathematical games that are played on boards: 1960 May: Reflections on the packing of spheres: 1960 Jun: Recreations involving folding and cutting sheets of paper 1960 Jul: Incidental information about the extraordinary number pi: 1960 Aug

7. Math Blaster Mystery: The Great Brain Robbery - Wikipedia

   en.wikipedia.org/wiki/Math_Blaster_Mystery:_The...

   Math Blaster Mystery: The Great Brain Robbery is a product in a line of educational products created by Davidson & Associates that takes place in a different universe from the original Math Blaster. It has no relation to Davidson's earlier Apple II game Math Blaster Mystery. The game was released in North America, Sweden and Spain.