2×1.25+4.45×12.5+0.035（简便计算）_数学解答

2×1.25+4.45×12.5+0.035（简便计算）

人气：235 ℃　时间：2020-02-06 04:29:42

解答

2×1.25＋4.45×12.5＋0.035,你可能少打了一个数,是0.035×125 ＝2×1.25＋44.5×1.25＋0.035 ＝﹙2＋44.5﹚×1.25＋0.035 ＝46.5×1.25＋0.035 ＝58.125＋0.035 ＝58.16