题目内容
(1)3
-3
=
;
(2)
+1
=
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 6 |
| 1 |
| 6 |
(2)
| 3 |
| 4 |
| 1 |
| 2 |
2
| 1 |
| 4 |
2
.| 1 |
| 4 |
分析:先通分,再根据同分母分数的加减法则计算即可求解.
解答:解:(1)3
-3
=3
-3
=
;
(2)
+1
=
+1
=2
.
故答案为:
;2
.
| 1 |
| 2 |
| 1 |
| 3 |
| 3 |
| 6 |
| 2 |
| 6 |
| 1 |
| 6 |
(2)
| 3 |
| 4 |
| 1 |
| 2 |
| 3 |
| 4 |
| 2 |
| 4 |
| 1 |
| 4 |
故答案为:
| 1 |
| 6 |
| 1 |
| 4 |
点评:考查了分数的加法和减法,关键是通分变为同分母分数.
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