0.8÷2=
1.05÷5=
24÷1.2=
0.75÷0.25=
2.4×0.5=
6.3+0.37 =
8.2÷4=
91÷0.13=
①16.2÷9-0.85
②13×6.5+6.5×7
③(3.94+7.76)÷0.78
④2.4÷1.25÷0.8