题目内容
我会填．
+
=
；
-
=
；
-
=
；
-
=
；1-
=
；
+
=1．
| 1 |
| 13 |
| 7 |
| 13 |
| 8 |
| 13 |
| 8 |
| 13 |
| 5 |
| 7 |
| 2 |
| 7 |
| 3 |
| 7 |
| 3 |
| 7 |
| 6 |
| 13 |
| 6 |
| 13 |
| 1 |
| 13 |
| 5 |
| 13 |
| 7 |
| 5 |
| 4 |
| 5 |
| 4 |
| 5 |
| 3 |
| 5 |
| 7 |
| 12 |
| 7 |
| 12 |
| 5 |
| 12 |
| 7 |
| 8 |
| 1 |
| 8 |
| 1 |
| 8 |
分析：根据同分母分数加减法的计算方法进行计算．
解答：解：
+
=
；
-
=
；
-
=
；
-
=
；
1-
=
；
+
=1．
| 1 |
| 13 |
| 7 |
| 13 |
| 8 |
| 13 |
| 5 |
| 7 |
| 2 |
| 7 |
| 3 |
| 7 |
| 6 |
| 13 |
| 1 |
| 13 |
| 5 |
| 13 |
| 7 |
| 5 |
| 4 |
| 5 |
| 3 |
| 5 |
1-
| 7 |
| 12 |
| 5 |
| 12 |
| 7 |
| 8 |
| 1 |
| 8 |
点评：同分母分数相加减，分母不变，只把分子相加减．
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