3.14×0.5=
10÷50%=
2-=
- =
+×=
5×÷5×=
1.09+11%=
×17=
×16= 12÷ = × =
0× + = 1÷ = ÷ =
÷ = × ÷ × =
= 1.8-40%= 12÷=
×72%= 3.5×= -×=
×50%=
8÷=
4.2×=
1-=
÷15=
2.4÷=
+=
1÷=
×÷×=
×30= 0.5+ = =
= =