问题 解答题 口算.1.2×5=0.8×7=0.4×0.5=4.8×0.2=0.3×60=6.09×0=8.8×0.1=5.28+1.6= 答案 1.2×5=6,0.8×7=5.6,0.4×0.5=0.2,4.8×0.2=0.96,0.3×60=18,6.09×0=0,8.8×0.1=0.88,5.28+1.6=6.88,