2.7÷92.7 4.5÷0.94.5
895×0.9895 1.45×11.45 31.4×1.231.4
0.65×1.9=
12.35÷1.9=
3.27×2.73.27
47.8÷0.947.8
1公顷9800m2
1.5÷0.3= 2-1.01= 4.5+4.05= 7.9÷0.79= 1+3.7÷0.37=
9.6÷3.2= 0.8×0.2= 8.4÷4= 3.1×0.4= 1÷0.25×4=