题目内容
填一填:
| 1 |
| 3 |
| 1 |
| 3 |
| 1 |
| 9 |
| 1 |
| 9 |
| 3 |
| 9 |
| 3 |
| 9 |
| 1 |
| 9 |
| 1 |
| 9 |
| 4 |
| 9 |
| 4 |
| 9 |
分析:直接根据图一写出分数,得出结果即可.
解答:解:
+
=
+
=
.
故答案为:
,
;
,
;
.
| 1 |
| 3 |
| 1 |
| 9 |
| 3 |
| 9 |
| 1 |
| 9 |
| 4 |
| 9 |
故答案为:
| 1 |
| 3 |
| 1 |
| 9 |
| 3 |
| 9 |
| 1 |
| 9 |
| 4 |
| 9 |
点评:此题利用图来探讨异分母分数加减法的计算方法:先通分,再按照同分母分数加减法进行计算.
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