7.4+6=
5-1.4-0.6=
10-0.09=
1+1%=
3.14×0.5=
0.1÷0.1÷0.01=
5÷-÷5=
0.32-0.22=
÷4=
-×0.8=
0.15:0.3=
0.1÷1%=
18÷0.4=
1.25×3.3×8=