题目内容
| 3 |
| 11 |
| 3 |
| 11 |
| 3 |
| 11 |
| 3 |
| 11 |
| 3 |
| 11 |
4
4
=| 12 |
| 11 |
| 12 |
| 11 |
分析:
+
+
+
是4个
相加,根据乘法的意义求解.
| 3 |
| 11 |
| 3 |
| 11 |
| 3 |
| 11 |
| 3 |
| 11 |
| 3 |
| 11 |
解答:解:
+
+
+
,
=
×4,
=
.
故答案为:4,
.
| 3 |
| 11 |
| 3 |
| 11 |
| 3 |
| 11 |
| 3 |
| 11 |
=
| 3 |
| 11 |
=
| 12 |
| 11 |
故答案为:4,
| 12 |
| 11 |
点评:本题考查了分数乘整数的意义:求几个相同加数和的简便运算.
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