× =
5÷0.4=
0÷12=
1- =
12×2.5×4=
÷ =
0.89÷100=
2.8×0.1=
=
3.4÷8÷12.5=
56×101
16.37﹣(6.37+8.8)
①(+-)÷
②125%×3.2×25
③19.43-(9.43+6.89)
④×80%+÷1