1.8 530克0.53千克
0.32×0.19= ×19=0.608 ×=6.08
0.98×0.980.98 0.84×3.84×0.84
18.3×1.218.3 2.75×1.0227.5×0.102
300÷12=25(米)他是先求:
36×25=900(平方米)再求: