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  2. Professor Kageyama's Maths Training: The Hundred Cell ...

    en.wikipedia.org/wiki/Professor_Kageyama's_Maths...

    Generations and Personal Trainer series. [3] The game received mixed reviews, with common criticisms cited for the game's difficulty in recognizing some numbers and for not being very entertaining to play. At GameRankings, it holds an average review score of 65%. [4]

  3. Chisanbop - Wikipedia

    en.wikipedia.org/wiki/Chisanbop

    With the chisanbop method it is possible to represent all numbers from 0 to 99 with the hands, rather than the usual 0 to 10, and to perform the addition, subtraction, multiplication and division of numbers. [4] The system has been described as being easier to use than a physical abacus for students with visual impairments. [5]

  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 multiplic

  5. Basic Math (video game) - Wikipedia

    en.wikipedia.org/wiki/Basic_Math_(video_game)

    For the Sears release of the Atari VCS under their Tele-Games label, the game was released as Math. [12] [13] Basic Math was re-released in January 1980 under the title Fun With Numbers. Atari halted production on new carts of the game by January 1982. The game remained in circulation as late as 1988, selling a little over 6,000 copies that ...

  6. Multiplication - Wikipedia

    en.wikipedia.org/wiki/Multiplication

    Area of a cloth 4.5m × 2.5m = 11.25m 2; 4 ⁠ 1 / 2 ⁠ × 2 ⁠ 1 / 2 ⁠ = 11 ⁠ 1 / 4Multiplication (often denoted by the cross symbol × , by the mid-line dot operator ⋅ , by juxtaposition, or, on computers, by an asterisk * ) is one of the four elementary mathematical operations of arithmetic, with the other ones being addition ...

  7. Karatsuba algorithm - Wikipedia

    en.wikipedia.org/wiki/Karatsuba_algorithm

    Karatsuba multiplication of az+b and cz+d (boxed), and 1234 and 567 with z=100. Magenta arrows denote multiplication, amber denotes addition, silver denotes subtraction and cyan denotes left shift. (A), (B) and (C) show recursion with z=10 to obtain intermediate values. The Karatsuba algorithm is a fast multiplication algorithm.

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