题目内容
脱式计算.
|
1
|
|
分析:根据题意,可用分数加减混合运算的运算顺序进行计算即可得到答案.
解答:解:(1)
-
+
=
+
=1;
(2)1
-
+
=
+
=1
;
(3)
-
=
-
=
.
| 3 |
| 4 |
| 3 |
| 8 |
| 5 |
| 8 |
=
| 3 |
| 8 |
| 5 |
| 8 |
=1;
(2)1
| 1 |
| 3 |
| 5 |
| 6 |
| 9 |
| 10 |
=
| 1 |
| 2 |
| 9 |
| 10 |
=1
| 2 |
| 5 |
(3)
| 17 |
| 20 |
| 1 |
| 15 |
=
| 51 |
| 60 |
| 4 |
| 60 |
=
| 47 |
| 60 |
点评:此题主要考查的是分数加减混合运算计算方法的应用.
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