A.
B.
C.
D.
3020-105=
1.8+0.82=
4.8÷0.24=
4.2+8.7÷0.29=
+0.72=
1.25×0.8=
+0.375=
0.2²=
910÷70=
12-2=
()×24=
×11=
÷5=
1-×2=
25×4%=
=
0.1÷10%=
×2.5×7=
1.5-
2.4÷
×0.7=