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4.5+6.3= 1.25×8= 90÷9%= 1.5×0.2= 5÷7=
205-199= 0.4-0.22= 0.52= = 2+2÷ =
36× = 2+ = 2.5×1.3×0.4= ÷0.6= 7× ÷7× =
进入组卷