题目内容
0.1÷(0.2÷0.3)÷(0.3÷0.4)÷(0.4÷0.5)÷(0.5÷0.6)÷(0.6÷0.7)÷(0.7÷0.8)÷(0.8÷0.9)
分析:原题=
÷
÷
÷
÷
÷
÷
÷
,然后根据除以一个数等于乘除数的倒数,都转化为乘法,然后约分即可.
| 1 |
| 10 |
| 2 |
| 3 |
| 3 |
| 4 |
| 4 |
| 5 |
| 5 |
| 6 |
| 6 |
| 7 |
| 7 |
| 8 |
| 8 |
| 9 |
解答:解:0.1÷(0.2÷0.3)÷(0.3÷0.4)÷(0.4÷0.5)÷(0.5÷0.6)÷(0.6÷0.7)÷(0.7÷0.8)÷(0.8÷0.9),
=
÷
÷
÷
÷
÷
÷
÷
,
=
×
×
×
×
×
×
×
,
=
.
=
| 1 |
| 10 |
| 2 |
| 3 |
| 3 |
| 4 |
| 4 |
| 5 |
| 5 |
| 6 |
| 6 |
| 7 |
| 7 |
| 8 |
| 8 |
| 9 |
=
| 1 |
| 10 |
| 3 |
| 2 |
| 4 |
| 3 |
| 5 |
| 4 |
| 6 |
| 5 |
| 7 |
| 6 |
| 8 |
| 7 |
| 9 |
| 8 |
=
| 9 |
| 20 |
点评:把本题中的除法根据除以一个数等于乘除数的倒数,都转化为乘法,是解答此题的关键.
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