2.5×4= 10-3.7= 5.6×10%=
37+25= 0.8÷0.002= 81÷3=
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=