67*1/4+5/2*3.75-9/2*25% 简便运算
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/07/07 01:32:28
67*1/4+5/2*3.75-9/2*25% 简便运算
过程
过程
![67*1/4+5/2*3.75-9/2*25% 简便运算](/uploads/image/z/2196702-54-2.jpg?t=67%2A1%2F4%2B5%2F2%2A3.75-9%2F2%2A25%25+%E7%AE%80%E4%BE%BF%E8%BF%90%E7%AE%97)
原式=67×25%+250%×3.75-4.5×25%
=67×25%+25%×37.5-4.5×25%
=25%×(67+37.5-4.5)
=25%×100
=25
=67×25%+25%×37.5-4.5×25%
=25%×(67+37.5-4.5)
=25%×100
=25