题目内容
(
-
+
)×72.
| 1 |
| 8 |
| 1 |
| 9 |
| 1 |
| 12 |
分析:根据乘法分配律进行简算.
解答:解:
(
-
+
)×72,
=
×72-
×72+
×72,
=9-8+6,
=1+6,
=7.
(
| 1 |
| 8 |
| 1 |
| 9 |
| 1 |
| 12 |
=
| 1 |
| 8 |
| 1 |
| 9 |
| 1 |
| 12 |
=9-8+6,
=1+6,
=7.
点评:此题主要考查了乘法分配律的灵活运用,然后再根据题意进行简算.
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