7.8÷0.2=
×2-3.5=
12×(-)=
-+=
4×(1-10%)=
-62.5%=
+50%=
÷+×2=
58+142= = 4.8÷100=
7÷ = - - = 12.5×0.25×4=
3﹣0.09= 21÷35= 0.77+0.33= 0.4×0.9÷0.4×0.9=
2÷= 0.42﹣0.32= 0.625÷0.25= =
8÷0.1=
2÷=
- = × = 80÷10%= 42×3.14=
30%+0.45= 3.6÷0.18= 2- = 6- - =