题目内容
计算:(1-
)(1-
)(1-
)(1-
)(1-
)(1-
)(1-
)(1-
)(1-
)=
.
| 1 |
| 4 |
| 1 |
| 9 |
| 1 |
| 16 |
| 1 |
| 25 |
| 1 |
| 36 |
| 1 |
| 49 |
| 1 |
| 64 |
| 1 |
| 81 |
| 1 |
| 100 |
| 11 |
| 20 |
| 11 |
| 20 |
分析:先计算括号里的数,再把结果两两相乘,最后再约分即可.
解答:解:原式=(
×
)×(
×
)×(
×
)×(
×
)×
=
×
×
×
×
=
| 3 |
| 4 |
| 8 |
| 9 |
| 15 |
| 16 |
| 24 |
| 25 |
| 35 |
| 36 |
| 48 |
| 49 |
| 63 |
| 64 |
| 80 |
| 81 |
| 99 |
| 100 |
| 2 |
| 3 |
| 9 |
| 10 |
| 20 |
| 21 |
| 35 |
| 36 |
| 99 |
| 100 |
| 11 |
| 20 |
点评:本题考查了分数的混合运算,解题的关键是注意约分.
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