题目内容
计算:(1-
)×(2-
)×(3-
)×(4-
)×(5-
)×(6-
)×(7-
)×(8-
)×(9-
)的值是 .
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| 9 |
| 9 |
| 10 |
考点:分数的巧算
专题:计算问题(巧算速算)
分析:先求出每个括号内的结果,然后通过约分进行计算.
解答:
解:(1-
)×(2-
)×(3-
)×(4-
)×(5-
)×(6-
)×(7-
)×(8-
)×(9-
)
=
×
×
×
×
×
×
×
×
=36288
故答案为:36288.
| 1 |
| 2 |
| 2 |
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| 3 |
| 4 |
| 4 |
| 5 |
| 5 |
| 6 |
| 6 |
| 7 |
| 7 |
| 8 |
| 8 |
| 9 |
| 9 |
| 10 |
=
| 1 |
| 2 |
| 4 |
| 3 |
| 9 |
| 4 |
| 16 |
| 5 |
| 25 |
| 6 |
| 36 |
| 7 |
| 49 |
| 8 |
| 64 |
| 9 |
| 81 |
| 10 |
=36288
故答案为:36288.
点评:此题解答的关键在于求出每个括号内的结果,进一步解决问题.
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