题目内容
算出得数,并化成最简分数.
+
=
-
=
-
=
+
=
| 4 |
| 9 |
| 2 |
| 9 |
| 15 |
| 16 |
| 7 |
| 16 |
| 7 |
| 15 |
| 2 |
| 15 |
| 5 |
| 8 |
| 7 |
| 8 |
分析:同分母分数加减,分母不变,只把分子相加减,能约分的要约分,据此计算即可.
解答:解:
+
=
-
=
-
=
+
=
| 4 |
| 9 |
| 2 |
| 9 |
| 2 |
| 3 |
| 15 |
| 16 |
| 7 |
| 16 |
| 1 |
| 2 |
| 7 |
| 15 |
| 2 |
| 15 |
| 1 |
| 3 |
| 5 |
| 8 |
| 7 |
| 8 |
| 3 |
| 2 |
点评:此题主要考查的是同分母分数相加减法的计算方法的应用.
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