Simple Rules for Rounding Numbers Correctly - ThoughtCo
https://www.thoughtco.com/how-to-round-numbers-2312079
Sep 1, 2019 · Rounding Rules for Decimal Numbers. Determine what your rounding digit is and look to the right side of it. If that digit is 4, 3, 2, or 1, simply drop all digits to the right of it. If that digit is 5, 6, 7, 8, or 9 add one to the rounding digit and drop all digits to the right of it.
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