40.8*0.25=10.2
40.8×0.25的竖式计算:40.8×0.25=10.2
40. 8×0.25=10.2
0.25×40.8=0.25x40 +0.25x0.8=10+ 0.2=10.2
40.8×0.25—————— 2040 816——————10.200