题目内容
| 2 |
| 9 |
| 2 |
| 9 |
| 2 |
| 9 |
| 2 |
| 9 |
| 2 |
| 9 |
| 2 |
| 9 |
4
4
=| 8 |
| 9 |
| 8 |
| 9 |
分析:根据乘法的意义求解.
解答:解:
+
+
+
=
×4=
.
故答案为:
,4,
.
| 2 |
| 9 |
| 2 |
| 9 |
| 2 |
| 9 |
| 2 |
| 9 |
| 2 |
| 9 |
| 8 |
| 9 |
故答案为:
| 2 |
| 9 |
| 8 |
| 9 |
点评:本题考查了乘法的意义:求几个相同加数和的简便运算.
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| 2 |
| 9 |
| 2 |
| 9 |
| 2 |
| 9 |
| 2 |
| 9 |
| 2 |
| 9 |
| 2 |
| 9 |
| 8 |
| 9 |
| 8 |
| 9 |
| 2 |
| 9 |
| 2 |
| 9 |
| 2 |
| 9 |
| 2 |
| 9 |
| 2 |
| 9 |
| 8 |
| 9 |
| 2 |
| 9 |
| 8 |
| 9 |