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  2. 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.

  3. Lattice multiplication - Wikipedia

    en.wikipedia.org/wiki/Lattice_multiplication

    A grid is drawn up, and each cell is split diagonally. The two multiplicands of the product to be calculated are written along the top and right side of the lattice, respectively, with one digit per column across the top for the first multiplicand (the number written left to right), and one digit per row down the right side for the second multiplicand (the number written top-down).

  4. Template:Sudoku 9x9 grid - Wikipedia

    en.wikipedia.org/wiki/Template:Sudoku_9x9_grid

    The cell values cannot be empty, else the cell grid borders don't show. Use   as default. See [[ Template : Sudoku 9x9 table ]] and [[ Template : Sudoku 3x3 table ]] for table trivia Modeled after [[ Template : 4x4 type square ]] Orig: LarryLACa 11/4/05 This comment must cuddle next template call to avoid introducing nl whitespace in output,

  5. Worksheet - Wikipedia

    en.wikipedia.org/wiki/Worksheet

    The form comes with two worksheets, one to calculate exemptions, and another to calculate the effects of other income (second job, spouse's job). The bottom number in each worksheet is used to fill out two if the lines in the main W4 form. The main form is filed with the employer, and the worksheets are discarded or held by the employee.

  6. 15 puzzle - Wikipedia

    en.wikipedia.org/wiki/15_puzzle

    The number of possible positions of the 24 puzzle is ⁠ 25! / 2 ⁠ ≈ 7.76 × 10 24, which is too many to calculate God's number feasibly using brute-force methods. In 2011, lower bounds of 152 single-tile moves or 41 multi-tile moves had been established, as well as upper bounds of 208 single-tile moves or 109 multi-tile moves.

  7. Delannoy number - Wikipedia

    en.wikipedia.org/wiki/Delannoy_number

    In mathematics, a Delannoy number counts the paths from the southwest corner (0, 0) of a rectangular grid to the northeast corner (m, n), using only single steps north, northeast, or east. The Delannoy numbers are named after French army officer and amateur mathematician Henri Delannoy .

  8. Multiply-with-carry pseudorandom number generator - Wikipedia

    en.wikipedia.org/wiki/Multiply-with-carry...

    This is the same as a generator with multiplier b, but producing output in reverse order, which does not affect the quality of the resultant pseudorandom numbers. Couture and L'Ecuyer [ 3 ] have proved the surprising result that the lattice associated with a multiply-with-carry generator is very close to the lattice associated with the Lehmer ...

  9. Magic square - Wikipedia

    en.wikipedia.org/wiki/Magic_square

    The number for n = 6 had previously been estimated to be (1.7745 ± 0.0016) × 10 19. [63] [64] [61] Magic tori. Cross-referenced to the above sequence, a new classification enumerates the magic tori that display these magic squares. The number of magic tori of order n from 1 to 5, is: 1, 0, 1, 255, 251449712 (sequence A270876 in the OEIS).