简便计算:0.1÷0.02+0.45×0.01

来源:学生作业帮助网 编辑:六六作业网 时间:2024/05/02 13:14:19
简便计算:0.1÷0.02+0.45×0.01简便计算:0.1÷0.02+0.45×0.01简便计算:0.1÷0.02+0.45×0.010.1÷0.02+0.45×0.01可以看作0.1÷1/50+

简便计算:0.1÷0.02+0.45×0.01
简便计算:0.1÷0.02+0.45×0.01

简便计算:0.1÷0.02+0.45×0.01
0.1÷0.02+0.45×0.01
可以看作0.1÷1/50+0.0045
0.1×50+0.0045
5+0.0045
=5.0045

原式=0.1x50+0.045x0.1
=0.1x(50+0.045)
=0.1x50.045
=5.0045

把他们乘100 再除100 [(0.1÷0.02+0.45×0.01)×100]÷100=(10÷2+45×1)÷100=0.5