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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)].

题目详情
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)].
▼优质解答
答案和解析
①25.84÷1.7=15.2
作业帮

9.25÷3.7=2.5
作业帮

1÷125=0.008
作业帮

1.4÷21=0.0
6

作业帮

(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