简便计算:(2.5+0.25+0.025)*4
来源:学生作业学帮网 编辑:学帮网 时间:2024/04/29 00:56:39
简便计算:(2.5+0.25+0.025)*4
用乘法分配律.
(2.5+0.25+0.025)*4
=2.5*4+0.25*4+0.025*4
=10+1+0.1
=11.1
(2.5+0.25+0.025)*4
=2.5*4+0.25*4+0.025*4
=10+1+0.1
=11.1
原始=2.5*4+0.25*4+0.025*4
=10+1+0.1
=11.1
(2.5+0.25+0.025)*4
=2.5*4+0.25*4+0.025*4
=10+1+0.1
=11.1