×30= ÷ = + = ÷ = 0× =
3.2÷0.4= 5- = × = 1.21× = ÷2.2=
75%×=
50%+2=
1.5+25=
3.14×22=
×4=
÷2=
÷=
×=
1÷=
÷60%=
×15=
-=
6.8÷10%=
4.5+=
×