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训练C卷 班级______ 姓名______ 得分______ 1.91.5＋88.8＋90.2＋270.4＋89.6＋186.7＋91.8= 2.123+234＋345-456+567＋678＋789-890= 3.2023-1＋2—3+4—5＋……+2023= 4.93＋87＋88＋79＋100＋62＋75＋95＋85＋69＋72＋98＋89＋77＋54＋ 75＋92＋85+83＋76+65＋60＋79＋86+100＋49+97＋97＋80+78= 5.0.2023+0.125＋0.2023+0.25+0.2023+0.375＋0.2023+0.5+0.2023＋0.625 ＋0.2023＋0.75＋0.2023＋0.875＋0.2023= | 
