0.3时=分 6千克5克=千克
12.8067.086 12.4-1.512.4-0.55 2.8×0.92.8
1.25×0.8= 8.5÷100= 3.7-1.8= 8.57+2.43=
100×3.4= 0.8×0.05= 5.88+0.2= 0.36×0=
10.9×10×0.1= 7.6×11-7.6×1=