需要我國(guó)科學(xué)技術(shù)委員會(huì)正式頒布的《數(shù)字修約規(guī)則》,通常稱為“四舍六入五成雙”法則.四舍六入五考慮,即當(dāng)尾數(shù)≤4時(shí)舍去,尾數(shù)為6時(shí)進(jìn)位.當(dāng)尾數(shù)4舍為5時(shí),則應(yīng)是末位數(shù)是奇數(shù)還是偶數(shù),5前為偶數(shù)應(yīng)將5舍去,5前為奇數(shù)應(yīng)...