58.5×8.1＋11×1.25＋71×1.9＝

来源：学生作业帮编辑：作业帮分类：数学作业时间：2024/05/25 16:41:07

58.5×8.1＋11×1.25＋71×1.9＝
要简便计算的步骤

55.5*(10-1.9)+(10+1)*1.25+71*1.9
=555-55.5*1.9+12.5+1.25+71*1.9
=555+1.9(71-55.5)+12.5+1.25
=555+1.9*25.5+12.5+1.25
=555+(2-0.1)*25.5+12.5+1.25
=555+51-2.55+12.5+1.25
=606+13.75-2.55
=606+11.2
=617.2
是五年级的题!我做过
我是一个五年级的小学生

58.5×8.1＋11×1.25＋71×1.9＝ 41.2×8.1＋11×1.25＋5.37×1.9=?能简算要简算 41.2*8.1＋11*1.25＋53.7*1.9 如何简便计算?（脱式） 41.2×8.1+11×1.25+53.7×1.9= 41.2*8.1+11*1.25+53.7*1.9简便计算 41.2*8.1+11*1.25+53.7*1.9的简算 41.2乘8.1+11乘1.25+53.7乘1.9 一道简算题 41.2×8.1+11×1.25+53.7×1.9 53.7*1.9+41.2*8.1+11*1.25的简便运算 41.2乘8.1+11乘1.25+3.7乘1.9 用简便计算41.2*8.1+11*1.25+53.7*1.9 简便计算41.2*8.1+11*1.25+53.7*1.9急待解决.