0.2× = ×4÷ ×4= ÷ =
16÷20%= 3.2+ - +3.2= × ×0=
30×50=
4.8×100=
3600÷90=
0.3÷100=
10﹣0.36=
+ =
60× =
÷ =
× × =
11﹣ ﹣ =
0.25×32×1.25
×