前4题用竖式计算，后4题用递等式计算25.84÷1.7=9.25÷3.7=1÷125=1.4÷21=（7.7+1.54）÷0.70.94÷1.25÷0.8[（4.8-3.6）÷0.8-1]×0.099÷[0.3×（8-6.5）]．

Question

前4题用竖式计算，后4题用递等式计算
25.84÷1.7=
9.25÷3.7=
1÷125=
1.4÷21=
（7.7+1.54）÷0.7                      
0.94÷1.25÷0.8
[（4.8-3.6）÷0.8-1]×0.09              
9÷[0.3×（8-6.5）]．

Answer 1

①25.84÷1.7=15.2


9.25÷3.7=2.5


1÷125=0.008


1.4÷21=0.0

．

6

（7.7+1.54）÷0.7        
=9.24÷0.7
=13.2              

0.94÷1.25÷0.8
=0.94÷（1.25×0.8）
=0.94÷1
=0.94

[（4.8-3.6）÷0.8-1]×0.09        
=[1.2÷0.8-1]×0.09
=0.5×0.09
=0.045

9÷[0.3×（8-6.5）]
=9÷[0.3×1.5]
=9÷0.3÷1.5
=30÷1.5
=20