作业帮用简便算法解这道题1.25*67.875+125*6.7875+1.25*53.375
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/12 06:32:50
用简便算法解这道题1.25*67.875+125*6.7875+1.25*53.375
用简便算法解这道题
1.25*67.875+125*6.7875+1.25*53.375
用简便算法解这道题1.25*67.875+125*6.7875+1.25*53.375
1.25*67.875+125*6.7875+1.25*53.375
=1.25*67.875+1.25*678.75+1.25*53.375
=1.25*(67.875+53.375)+1.25*678.75
=1.25*121.25+1.25*678.75
=1.25*(121.25+678.75)
=1.25*800
=1000
原式=1.25×67.875+1.25×678.75+1.25×53.375
=1.25×(67.875+678.75+53.375)
=1.25×800
=1000