题目内容
(2007?延庆县)
×
+
×
.
| 8 |
| 15 |
| 7 |
| 18 |
| 11 |
| 18 |
| 8 |
| 15 |
分析:通过观察此题,运用乘法分配律简算.
解答:解:
×
+
×
,
=
×(
+
),
=
×1,
=
.
| 8 |
| 15 |
| 7 |
| 18 |
| 11 |
| 18 |
| 8 |
| 15 |
=
| 8 |
| 15 |
| 7 |
| 18 |
| 11 |
| 18 |
=
| 8 |
| 15 |
=
| 8 |
| 15 |
点评:此题考查了学生对乘法分配律的掌握情况.
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