30%×60%=
÷3=
8÷10%=
=
×16=
×=
88÷=
÷2=
3×÷3×=
0.25π=
4π=
0.45÷0.5 =
4.5×= 2-16%= 14÷= +×7=
+= 0.2÷40%= ×= ×8÷×8=
×4 9××9 × ×2×