问题 口算题 看谁算得又对又快。2.7÷0.9=0.75×4=0.37×0.3=12.5÷5=0.8×5×0.6=0÷0.02=1.6×5×0.1=2÷0.5+0.3=20.4÷6=0.81÷3= 答案 3；3；0.111；2.5；2.4；0；0.8；4.3；3.4；0.27
