0.6×0.9=
7.8÷0.3=
50×0.02=
8.1÷10=
6.4÷0.08=
2.4a+6a=
0.32=
13.5﹣3.5×2=
2.5×0.4=
6.3÷9=
7.6+0.6=
10.5-5=
200×0.5=
57÷1.9=
4÷80=
0.45÷0.3=
1.29-1.29÷1.29=