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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.

Educational grade level

elementary school level (California grade 3 standard)

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