题目内容
脱式计算.
-
×
+
÷
×
÷
.
| 5 |
| 2 |
| 5 |
| 3 |
| 1 |
| 5 |
| 1 |
| 8 |
| 1 |
| 7 |
| 2 |
| 31 |
| 1 |
| 4 |
| 2 |
| 4 |
| 1 |
| 7 |
分析:根据分数的四则混合运算进行计算即可得到答案.
解答:解:(1)
-
×
=
-
,
=2
;
(2)
+
÷
=
+
,
=2
;
(3)
×
÷
=
÷
,
=
.
| 5 |
| 2 |
| 5 |
| 3 |
| 1 |
| 5 |
=
| 5 |
| 2 |
| 1 |
| 3 |
=2
| 1 |
| 6 |
(2)
| 1 |
| 8 |
| 1 |
| 7 |
| 2 |
| 31 |
=
| 1 |
| 8 |
| 31 |
| 14 |
=2
| 19 |
| 56 |
(3)
| 1 |
| 4 |
| 2 |
| 4 |
| 1 |
| 7 |
=
| 1 |
| 8 |
| 1 |
| 7 |
=
| 7 |
| 8 |
点评:此题主要考查的是分数的四则混合运算.
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