问题 口算题 直接写得数: 4.2+5.08=7.2÷0.072=4.3﹣3=0.75÷1.5=3.6×0.7÷3.6×0.71.05﹣0.95=2.5×4=2.5×2.4=3.2﹣1.34﹣1.66=1÷1.25÷4=12.8﹣0.28=1.25×0.8=8.4×5=5.6﹣5.6÷7=0.8+0.2﹣0.8+0.2= 答案 9.28,100,1.3,0.5,0.49,0.1,10,6,0.2,0.2,12.52,1,42