0.3×0.2= 0.7×0.3= 0.02×0.2= 0.8×0.5=
0.78÷0.01= 4.8÷0.06= 4÷0.25= 3.2÷0.05=
7.2÷1.6+0.8 18×0.45-3.81
2.5×3.6+42÷28 5.6×1.25-5.58÷3.1
提问:
列式解答: