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  2. Division (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Division_(mathematics)

    In terms of partition, 20 / 5 means the size of each of 5 parts into which a set of size 20 is divided. For example, 20 apples divide into five groups of four apples, meaning that "twenty divided by five is equal to four". This is denoted as 20 / 5 = 4, or ⁠ 20 / 5 ⁠ = 4. [2] In the example, 20 is the dividend, 5 is the divisor, and 4 is ...

  3. Long division - Wikipedia

    en.wikipedia.org/wiki/Long_division

    12 / 135 \ 11,25 12 15 12 30 24 60 60 0 In Finland , the Italian method detailed above was replaced by the Anglo-American one in the 1970s. In the early 2000s, however, some textbooks have adopted the German method as it retains the order between the divisor and the dividend.

  4. Table of divisors - Wikipedia

    en.wikipedia.org/wiki/Table_of_divisors

    d() is the number of positive divisors of n, including 1 and n itself; σ() is the sum of the positive divisors of n, including 1 and n itselfs() is the sum of the proper divisors of n, including 1 but not n itself; that is, s(n) = σ(n) − n

  5. Trillion - Wikipedia

    en.wikipedia.org/wiki/Trillion

    Originally, the United Kingdom used the long scale trillion. However, since 1974, official UK statistics have used the short scale. Since the 1950s, the short scale has been increasingly used in technical writing and journalism, although the long scale definition still has some limited usage.

  6. 1,000,000,000 - Wikipedia

    en.wikipedia.org/wiki/1,000,000,000

    Mathematics portal; 1,000,000,000 (one billion, short scale; one thousand million or one milliard, one yard, [1] long scale) is the natural number following ...

  7. List of Dewey Decimal classes - Wikipedia

    en.wikipedia.org/wiki/List_of_Dewey_Decimal_classes

    000 Computer science, knowledge, and systems. 000 Computer science, information and general works; 001 Knowledge; 002 The book (writing, libraries, and book-related topics) 003 Systems; 004 Data processing and computer science; 005 Computer programming, programs, and data; 006 Special computer methods (e.g. AI, multimedia, VR) [4] 007–009 ...

  8. Orders of magnitude (numbers) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(numbers)

    0.000 000 000 001; 1000 −4; short scale: one trillionth; long scale: one billionth) ISO: pico-(p) Mathematics: The probability in a game of bridge of one player getting a complete suit is approximately 2.52 × 10 −11 (0.000 000 002 52%). Biology: Human visual sensitivity to 1000 nm light is approximately 1.0 × 10 −10 of its peak ...

  9. Divisibility rule - Wikipedia

    en.wikipedia.org/wiki/Divisibility_rule

    The result is the same as the result of 125 divided by 5 (125/5=25). Example. If the last digit is 0. 110 (The original number) 11 0 (Take the last digit of the number, and check if it is 0 or 5) 11 0 (If it is 0, take the remaining digits, discarding the last) 11 × 2 = 22 (Multiply the result by 2)