2012+705= 603×39≈ 2÷0.02= 0×0.54=
1﹣ + = 32×25%= × = ÷ =
25×24= 910﹣570= 6.3÷0.9=
+ = + = ÷0.1=
0.25 0.04
453+198=
10﹣0.03=
0.1÷0.01=
4×0.025=
4.5﹣0.75﹣0.25=
5×4÷5×4=