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  2. Subtraction - Wikipedia

    en.wikipedia.org/wiki/Subtraction

    In what is known in the United States as traditional mathematics, a specific process is taught to students at the end of the 1st year (or during the 2nd year) for use with multi-digit whole numbers, and is extended in either the fourth or fifth grade to include decimal representations of fractional numbers.

  3. Operation (mathematics) - Wikipedia

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

    For example, in the real numbers, the squaring operation only produces non-negative numbers; the codomain is the set of real numbers, but the range is the non-negative numbers. Operations can involve dissimilar objects: a vector can be multiplied by a scalar to form another vector (an operation known as scalar multiplication ), [ 13 ] and the ...

  4. Arithmetic - Wikipedia

    en.wikipedia.org/wiki/Arithmetic

    Integer arithmetic is not closed under division. This means that when dividing one integer by another integer, the result is not always an integer. For instance, 7 divided by 2 is not a whole number but 3.5. [73] One way to ensure that the result is an integer is to round the result to a whole number.

  5. Math Mysteries - Wikipedia

    en.wikipedia.org/wiki/Math_Mysteries

    Math Mysteries is a collection of five math-related educational video games for the Windows and Macintosh platforms, developed and published by Tom Snyder Productions. The games were designed to fit the NCTM standards at their time of development. [ 1 ]

  6. Mathematics - Wikipedia

    en.wikipedia.org/wiki/Mathematics

    Mathematics is a field of study that discovers and organizes methods, theories and theorems that are developed and proved for the needs of empirical sciences and mathematics itself.

  7. Addition - Wikipedia

    en.wikipedia.org/wiki/Addition

    A whole number followed immediately by a fraction indicates the sum of the two, called a mixed number. [4] For example, = + = This notation can cause confusion, since in most other contexts, juxtaposition denotes multiplication instead. [5]

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