(25+2.5+0.25)*4.4怎么简算

来源:学生作业帮助网 编辑:六六作业网 时间:2024/05/10 00:32:50
(25+2.5+0.25)*4.4怎么简算(25+2.5+0.25)*4.4怎么简算(25+2.5+0.25)*4.4怎么简算(25+2.5+0.25)*4.4=25*4+2.5*4+0.25*4+2

(25+2.5+0.25)*4.4怎么简算
(25+2.5+0.25)*4.4怎么简算

(25+2.5+0.25)*4.4怎么简算
(25+2.5+0.25)*4.4
=25*4+2.5*4+0.25*4+25*0.4+2.5*0.4+0.25*0.4
=100+10+1+10+1+0.1
=122.1

把4.4拆成4*1.1

(25+2.5+0.25)*4.4
=25*4.4+2.5*4.4+0.25*4.4
=25*4*1.1+2.5*4*1.1+0.25*4*1.1
=100*1.1+10*1.1+1*1.1
=110+11+1.1
=122.1