直接写得数: 0.5×1.2= 0.963÷9= 1.85×5= 1.7÷0.27= 0.8×1.25= 7.7×0.5×0.2= (0.2+0.2+0.2)÷0.3= 4.2÷0.01= 21.8﹣7.2﹣2.8= 0.5÷0.5+(0.9﹣0.9)=
竖式计算:
竖式计算: 315×3= 404×3=
竖式计算: 308×9= 752×6=
竖式计算: 310×4= 182×5=