37.5*1/50+3又1/4*1.1-0.15*12.5答案正确再回答,错了我宰

37.5*1/50+3又1/4*1.1-0.15*12.5答案正确再回答,错了我宰
37.5*1/50+3又1/4*1.1-0.15*12.5
答案正确再回答,错了我宰

37.5*1/50+3又1/4*1.1-0.15*12.5答案正确再回答,错了我宰
37.5*1/50+3又1/4*1.1-0.15*12.5
=3.25×1.1+37.5×0.02-0.05×37.5
=3.575-37.5×0.03
=3.575-1.125
=2.45

1

(1)1.1-_85.5/3 便宜了0.15元 用85.5除3在除30得0.95；在用1.1-0.95=0.15 每袋比零售便宜了0.15元 1.1-85.5除

=75/100+3.25*1.1-0.15*12.5=0.75+3.575-1.875=2.45 口算的验证下