题目内容
| 3 |
| 8 |
| 3 |
| 8 |
| 3 |
| 8 |
| 3 |
| 8 |
| 3 |
| 8 |
| 3 |
| 8 |
4
4
=| 3 |
| 2 |
| 3 |
| 2 |
分析:
+
+
+
表示4个
相加的和是多少,用乘法计算比较简便.
| 3 |
| 8 |
| 3 |
| 8 |
| 3 |
| 8 |
| 3 |
| 8 |
| 3 |
| 8 |
解答:解:
+
+
+
=
×4=
;
故答案为:
,4,
.
| 3 |
| 8 |
| 3 |
| 8 |
| 3 |
| 8 |
| 3 |
| 8 |
| 3 |
| 8 |
| 3 |
| 2 |
故答案为:
| 3 |
| 8 |
| 3 |
| 2 |
点评:此题考查分数乘整数的意义和计算方法.
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