3又3/5*25又2/5+37.9*6又2/5

来源：学生作业帮助网 编辑：作业帮 时间：2024/04/28 11:11:50
3又3/5*25又2/5+37.9*6又2/5

3又3/5*25又2/5+37.9*6又2/5
3又3/5*25又2/5+37.9*6又2/5

3又3/5*25又2/5+37.9*6又2/5
3又3/5*25又2/5+37.9*6又2/5=3.6*25.4+37.9*6.4
=(10-6.4)*25.4+37.9*6.4
=254+(37.9-25.4)*6.4
=254+12.5*6.4
=254+12.5*8*0.8
=254+100*0.8
=254+80
=334