8.1÷0.9=
0.65÷1.3=
0.45÷3=
0.36×3=
21.9÷7.3=
0.32÷1.6=
8÷5=
8.5÷2=
(1)50×0.02=
(2)8.1÷10=
(3)6.4÷0.08=
(4)0.25×9×4=
(5)250×0.04=
(6)5.8÷0.29=
(7)5.5÷0.1=
(8)0.3×0.7÷0.3×0.7=
45×37+45×63
25 ×32×125
56×101
说理: