问题 口算题 直接写出得数。5.6÷0.8=3.6÷0.4=0.72÷0.06=100÷0.25=0.3×0.3=17×0.5=17÷0.5=4.2÷0.06=2.9×2.7÷2.7=0.018÷6=0.4÷0.4÷0.25=0.3÷0.3×0.3÷0.3= 答案 7；9；12；400；0.09；8.5；34；70；2.9；0.003；4；1
