結球
a miscalculation that results from rounding off numbers to a convenient number of decimals
便利な少数桁の数への四捨五入による計算間違え
the error in the calculation was attributable to rounding taxes are rounded off to the nearest dollar but the rounding error is surprisingly small
計算の誤りは、丸めが原因であった 税は最も近いドルまで四捨五入されるが、概数の誤差は驚くほど小さい