947+(372-447)怎么简算

来源:学生作业帮助网 编辑:六六作业网 时间:2024/05/12 01:06:48
947+(372-447)怎么简算947+(372-447)怎么简算947+(372-447)怎么简算947+(372-447)=947-447+372=500+372=872947+(372-447

947+(372-447)怎么简算
947+(372-447)怎么简算

947+(372-447)怎么简算
947+(372-447)
=947-447+372
=500+372
=872

947+(372-447)
=900+47+{372-(400+47)}
=900+47+372-400-47
=900-400+372+47-47
=500+372+0
=872

947+(372-447) =947-447+372 =500+372 =872