简算:2.46*9.9+0.246急

来源:学生作业学帮网 编辑:学帮网 时间:2024/05/28 00:59:49

简算:2.46*9.9+0.246

2.46*9.9+0.246
=0.246*10*9.9+0.246
=0.246*99+0.246
=0.246*(99+1)
=0.246*100
=24.6