题目内容
| 5 |
| 7 |
| 3 |
| 8 |
| 5 |
| 8 |
| 5 |
| 7 |
分析:利用乘法的分配律简算即可.
解答:解:
×
+
×
=
×(
+
)
=
×1
=
.
| 5 |
| 7 |
| 3 |
| 8 |
| 5 |
| 8 |
| 5 |
| 7 |
=
| 5 |
| 7 |
| 3 |
| 8 |
| 5 |
| 8 |
=
| 5 |
| 7 |
=
| 5 |
| 7 |
点评:本题主要考查了乘法的分配律的逆用.
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题目内容
| 5 |
| 7 |
| 3 |
| 8 |
| 5 |
| 8 |
| 5 |
| 7 |
| 5 |
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| 3 |
| 8 |
| 5 |
| 8 |
| 5 |
| 7 |
| 5 |
| 7 |
| 3 |
| 8 |
| 5 |
| 8 |
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