怎样简便运算,
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/30 08:42:12
![怎样简便运算,](/uploads/image/z/12637611-27-1.jpg?t=%E6%80%8E%E6%A0%B7%E7%AE%80%E4%BE%BF%E8%BF%90%E7%AE%97%2C)
怎样简便运算,
怎样简便运算,
怎样简便运算,
(3又3/11*25.8-3又3/11*16.76+18/55*19.6)*(1.25-7/12+5/36)
=[3又3/11*(25.8-16.76)+18/55*(20-0.4)]*(1.25-4/9)
=[36/11*9.04+72/11-7.2/55]*29/36
=29/11*9.04+58/11-0.2*29/55
=29*(9.04/11+2/11-0.2/55)
=29*(9.04/11-0.04/11+2/11)
=29*11/11
=29 .