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
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![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](/uploads/image/z/3723380-44-0.jpg?t=37.5%2A1%2F50%2B3%E5%8F%881%2F4%2A1.1-0.15%2A12.5%E7%AD%94%E6%A1%88%E6%AD%A3%E7%A1%AE%E5%86%8D%E5%9B%9E%E7%AD%94%2C%E9%94%99%E4%BA%86%E6%88%91%E5%AE%B0)
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