3.75+6.28-2.75+3.8怎么做简便算试
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3.75+6.28-2.75+3.8怎么做简便算试
3.75+6.28-2.75+3.8怎么做简便算试
3.75+6.28-2.75+3.8怎么做简便算试
(3.75-2.75)+(6.28+3.8)
3.75+6.28-2.75+3.8怎么做简便算试
3.75+6.28-2.75+3.8怎么做简便算试
3.75+6.28-2.75+3.8怎么做简便算试
(3.75-2.75)+(6.28+3.8)