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  2. Long division - Wikipedia

    en.wikipedia.org/wiki/Long_division

    If necessary, simplify the long division problem by moving the decimals of the divisor and dividend by the same number of decimal places, to the right (or to the left), so that the decimal of the divisor is to the right of the last digit. When doing long division, keep the numbers lined up straight from top to bottom under the tableau.

  3. Fourth grade - Wikipedia

    en.wikipedia.org/wiki/Fourth_grade

    Fourth grade (also 4th Grade or Grade 4) is the fourth year of formal or compulsory education. It is the fourth year of primary school . Children in fourth grade are usually 9–10 years old.

  4. Ruffini's rule - Wikipedia

    en.wikipedia.org/wiki/Ruffini's_rule

    In mathematics, Ruffini's rule is a method for computation of the Euclidean division of a polynomial by a binomial of the form x – r. It was described by Paolo Ruffini in 1809. [ 1 ] The rule is a special case of synthetic division in which the divisor is a linear factor.

  5. Elementary arithmetic - Wikipedia

    en.wikipedia.org/wiki/Elementary_arithmetic

    The symbols for elementary-level math operations. From top-left going clockwise: addition, division, multiplication, and subtraction. Elementary arithmetic is a branch of mathematics involving addition, subtraction, multiplication, and division.

  6. Chunking (division) - Wikipedia

    en.wikipedia.org/wiki/Chunking_(division)

    Compared to the short division and long division methods that are traditionally taught, chunking may seem strange, unsystematic, and arbitrary. However, it is argued that chunking, rather than moving straight to short division, gives a better introduction to division, in part because the focus is always holistic, focusing throughout on the ...

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