41.2×8.1+1.1×91/4+53.7×1.9

来源：学生作业帮编辑：作业帮分类：数学作业时间：2024/05/13 15:46:42

41.2×8.1+1.1×91/4+53.7×1.9
我再说一遍是9又1分之4,用简便算法,OK?
这里只有过客3317 看见了.

41.2×8.1+1.1×9 1/4+53.7×1.9
=41.2×8.1+1.1×9.25+53.7×1.9
=41.2×8.1+1.1×9.25+(41.2+12.5)×1.9
=41.2×8.1+41.2×1.9+1.1×9.25+12.5×1.9
=41.2×(8.1+1.9)+(1+0.1)×9.25+12.5×(2-0.1)
=412+9.25+0.925+25-1.25
=412+0.925+25+(9.25-1.25)
=412+8+25+0.925
=445.925

41.2*8.1+1.1*12.5+53.7*1.9用简便方法计算简算41.2*8.1+11*9.25+53.7*1.9 计算：41.2*8.1+11*9.25+53.7*1.9 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*8.1+11*9.25+53.7*1.9(小学数奥_) 41.2乘8.1+11乘1.25+53.7乘1.9 41.2*8.1+11*9.25+53.7*1.9=?简算一道简算题 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*8.1+11*9.25+53.7*1.9用脱式计算