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  2. Standard algorithms - Wikipedia

    en.wikipedia.org/wiki/Standard_algorithms

    Illustration of Traditional Standard Algorithms - Addition, Subtraction, Multiplication, Division. Standard algorithms are digit oriented, largely right-handed (begin operations with digits in the ones place), and focus on rules (Charles, [2] 2020). Below, the standard arithmetic algorithms for addition, subtraction, multiplication, and ...

  3. Computational complexity of mathematical operations - Wikipedia

    en.wikipedia.org/wiki/Computational_complexity...

    Graphs of functions commonly used in the analysis of algorithms, showing the number of operations versus input size for each function. The following tables list the computational complexity of various algorithms for common mathematical operations.

  4. Multiplication algorithm - Wikipedia

    en.wikipedia.org/wiki/Multiplication_algorithm

    More formally, multiplying two n-digit numbers using long multiplication requires Θ(n 2) single-digit operations (additions and multiplications). When implemented in software, long multiplication algorithms must deal with overflow during additions, which can be expensive.

  5. Elementary arithmetic - Wikipedia

    en.wikipedia.org/wiki/Elementary_arithmetic

    Toggle the table of contents. ... multiplication, and subtraction. ... The product of 2 and 3 is 6, and the carry digit adds 2 to 6, so 8 is written under the tens ...

  6. Napier's bones - Wikipedia

    en.wikipedia.org/wiki/Napier's_bones

    The simplest sort of multiplication, a number with multiple digits by a number with a single digit, is done by placing rods representing the multi-digit number in the frame against the left edge. The answer is read off the row corresponding to the single-digit number which is marked on the left of the frame, with a small amount of addition ...

  7. Portal:Arithmetic - Wikipedia

    en.wikipedia.org/wiki/Portal:Arithmetic

    Cycles of the unit digit of multiples of integers ending in 1, 3, 7 and 9 (upper row), and 2, 4, 6 and 8 (lower row) on a telephone keypad (from Multiplication table) Image 15 Calculations in mental arithmetic are done exclusively in the mind without relying on external aids.

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