题目内容
| 1 |
| 8 |
| 1 |
| 8 |
| 1 |
| 8 |
| 1 |
| 8 |
| 1 |
| 8 |
4
4
=| 1 |
| 2 |
| 1 |
| 2 |
分析:求4个
的和,根据乘法的意义,把加法算式变成乘法算式,再求解.
| 1 |
| 8 |
解答:解:
+
+
+
=
×4=
.
故答案为:4,
.
| 1 |
| 8 |
| 1 |
| 8 |
| 1 |
| 8 |
| 1 |
| 8 |
| 1 |
| 8 |
| 1 |
| 2 |
故答案为:4,
| 1 |
| 2 |
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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