题目内容
简算:
×
+
×
.
| 7 |
| 13 |
| 3 |
| 4 |
| 3 |
| 4 |
| 6 |
| 13 |
分析:根据乘法分配律进行简算.
解答:解:
×
+
×
=(
+
)×
=1×
=
.
| 7 |
| 13 |
| 3 |
| 4 |
| 3 |
| 4 |
| 6 |
| 13 |
=(
| 7 |
| 13 |
| 6 |
| 13 |
| 3 |
| 4 |
=1×
| 3 |
| 4 |
=
| 3 |
| 4 |
点评:考查了乘法分配律的运用.
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| 7 |
| 13 |
| 3 |
| 4 |
| 3 |
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| 6 |
| 13 |
| 7 |
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| 6 |
| 13 |
| 7 |
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| 6 |
| 13 |
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