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=
2.5+0.37= 1﹣0.73= 0.5×0.8= 0.9×7=
1.2÷0.4= 4÷0.5= 3.6÷4= 0.84÷0.4=
70÷5.6=
0.77÷3.5=
*42÷12=
1.25÷0.25=
6.12÷0.29≈(得数保留一位小数)
*6.58÷4.7=