简便计算:25.4×13-254×0.3

来源:学生作业学帮网 编辑:学帮网 时间:2024/05/28 08:09:14

简便计算:25.4×13-254×0.3

原式=25.4*13-25.4*3
=25.4*(13-3)
=25.4*10
=254

=25.4x13-25.4x0.3x10
=25.4x(13-3)
=254

25.4×13-254×0.3
=25.4×13-25.4×3
=25.4×(13-3)
=254