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  2. Karatsuba algorithm - Wikipedia

    en.wikipedia.org/wiki/Karatsuba_algorithm

    The standard procedure for multiplication of two n-digit numbers requires a number of elementary operations proportional to , or () in big-O notation. Andrey Kolmogorov conjectured that the traditional algorithm was asymptotically optimal , meaning that any algorithm for that task would require Ω ( n 2 ) {\displaystyle \Omega (n^{2 ...

  3. 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

  4. Bob Learn Jr. - Wikipedia

    en.wikipedia.org/wiki/Bob_Learn_Jr.

    Robert Learn Jr. (born April 4, 1962) is a professional ten-pin bowler and bowling coach. He formerly competed on the Professional Bowlers Association (PBA) Tour and is currently active on the PBA50 Tour. He is nicknamed "Mr. 300", having rolled over 100 perfect games between PBA and sanctioned USBC competition. [2]

  5. A. J. Johnson (bowler) - Wikipedia

    en.wikipedia.org/wiki/A._J._Johnson_(bowler)

    Adam "A. J." Johnson (born September 3, 1992) [1] is an American professional bowler from Oswego, Illinois. He has been a member of the Professional Bowlers Association (PBA) since 2015. [2] He won his first PBA Tour title in 2023. He has also been a multi-year member of Team USA, and is on the 2024 team. [3] Johnson is a member of the MOTIV ...

  6. Mental calculation - Wikipedia

    en.wikipedia.org/wiki/Mental_calculation

    For single digit numbers simply duplicate the number into the tens digit, for example: 1 × 11 = 11, 2 × 11 = 22, up to 9 × 11 = 99. The product for any larger non-zero integer can be found by a series of additions to each of its digits from right to left, two at a time. First take the ones digit and copy that to the temporary result.

  7. Bryan Goebel - Wikipedia

    en.wikipedia.org/wiki/Bryan_Goebel

    Bryan Goebel (born October 15, 1961, in Kansas City, Kansas) is a right-handed professional ten-pin bowler who currently resides in Shawnee, Kansas. He is a member of the Professional Bowlers Association. Having previously bowled on the PBA Tour, he now participates on the PBA50 Tour (formerly PBA Senior Tour).

  8. Lattice multiplication - Wikipedia

    en.wikipedia.org/wiki/Lattice_multiplication

    As an example, consider the multiplication of 58 with 213. After writing the multiplicands on the sides, consider each cell, beginning with the top left cell. In this case, the column digit is 5 and the row digit is 2. Write their product, 10, in the cell, with the digit 1 above the diagonal and the digit 0 below the diagonal (see picture for ...

  9. Grid method multiplication - Wikipedia

    en.wikipedia.org/wiki/Grid_method_multiplication

    The grid method (also known as the box method) of multiplication is an introductory approach to multi-digit multiplication calculations that involve numbers larger than ten. Because it is often taught in mathematics education at the level of primary school or elementary school , this algorithm is sometimes called the grammar school method.

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