5.7×0.85.7÷0.8 6.976.9÷0.34
1,4,16,,,1024。
2.4×0.3= 7÷0.07= 4.8÷24=
6.5+0.35= 1.25×8= 9.1-0.7=
25×0.4= 0.8-0.08=