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    Rounding

    Basic definition

    Rounding is the approximation of a number by truncating and possibly adjusting the last digit of interest based on digits appearing after it.

    Detailed definition

    The process of approximating a quantity, be it for convenience or, as in the case of numerical computations, of necessity. If rounding is performed on each of a series of numbers in a long computation, roundoff error can become important, especially if division by a small number ever occurs.

    Related terms

    nearest integer function | round number | roundoff error | shadowing theorem

    Educational grade level

    elementary school level (California grade 3 standard)

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