rounding error

Noun rounding error has 1 sense

• rounding error(n = noun.act) rounding - (mathematics) a miscalculation that results from rounding off numbers to a convenient number of decimals; "the error in the calculation was attributable to rounding"; "taxes are rounded off to the nearest dollar but the rounding error is surprisingly small"
is a kind of miscalculation, misestimation, misreckoning