题目内容
在○里填上“＞”“＜”或“=”．
+
○1-
+
○
+
+
○
+
+
○1-
-
○
+
+
○
+
．
| 1 |
| 3 |
| 1 |
| 3 |
| 1 |
| 3 |
| 1 |
| 7 |
| 5 |
| 7 |
| 2 |
| 7 |
| 2 |
| 7 |
| 1 |
| 2 |
| 1 |
| 2 |
| 3 |
| 6 |
| 3 |
| 6 |
| 1 |
| 4 |
| 2 |
| 4 |
| 2 |
| 4 |
| 7 |
| 8 |
| 6 |
| 8 |
| 1 |
| 8 |
| 1 |
| 8 |
| 1 |
| 5 |
| 4 |
| 5 |
| 2 |
| 5 |
| 2 |
| 5 |
分析：首先利用同分母分数加减法法则算出结果，再按同分母分数大小比较的方法得出答案即可．
解答：解：
+
=1-
+
＞
+
+
=
+
+
＞1-
-
＜
+
+
＞
+
．
故答案为：=；＞；=；＞；＜；＞．
| 1 |
| 3 |
| 1 |
| 3 |
| 1 |
| 3 |
| 1 |
| 7 |
| 5 |
| 7 |
| 2 |
| 7 |
| 2 |
| 7 |
| 1 |
| 2 |
| 1 |
| 2 |
| 3 |
| 6 |
| 3 |
| 6 |
| 1 |
| 4 |
| 2 |
| 4 |
| 2 |
| 4 |
| 7 |
| 8 |
| 6 |
| 8 |
| 1 |
| 8 |
| 1 |
| 8 |
| 1 |
| 5 |
| 4 |
| 5 |
| 2 |
| 5 |
| 2 |
| 5 |
故答案为：=；＞；=；＞；＜；＞．
点评：此题考查同分母分数加减法法则：分母不变，分子相加减；同分母分数大小比较的方法：分子大的那个分数就大．
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