题目内容
在横线里里填上“>”、“<”或“=”.
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考点:分数大小的比较
专题:运算顺序及法则
分析:(1)因
=
,所以
>
.
(2)
=
,所以
<
.
(3)
=
,所以
=
.
(4)
-
=
,
-
=
,所以
-
<
-
.
(5)
+
=1,
+
=1,所以
+
=
+
.
| 1 |
| 3 |
| 12 |
| 26 |
| 13 |
| 26 |
| 1 |
| 3 |
(2)
| 5 |
| 8 |
| 15 |
| 24 |
| 3 |
| 24 |
| 5 |
| 8 |
(3)
| 1 |
| 3 |
| 12 |
| 36 |
| 12 |
| 36 |
| 1 |
| 3 |
(4)
| 5 |
| 8 |
| 3 |
| 8 |
| 1 |
| 4 |
| 3 |
| 4 |
| 1 |
| 4 |
| 2 |
| 4 |
| 5 |
| 8 |
| 3 |
| 8 |
| 3 |
| 4 |
| 1 |
| 4 |
(5)
| 2 |
| 5 |
| 3 |
| 5 |
| 1 |
| 4 |
| 3 |
| 4 |
| 3 |
| 5 |
| 2 |
| 5 |
| 1 |
| 4 |
| 3 |
| 4 |
解答:
解:(1)
>
.
(2)
<
.
(3)
=
.
(4)
-
<
-
.
(5)
+
=
+
.
故答案为:>,<,=,<,=.
| 13 |
| 26 |
| 1 |
| 3 |
(2)
| 3 |
| 24 |
| 5 |
| 8 |
(3)
| 12 |
| 36 |
| 1 |
| 3 |
(4)
| 5 |
| 8 |
| 3 |
| 8 |
| 3 |
| 4 |
| 1 |
| 4 |
(5)
| 3 |
| 5 |
| 2 |
| 5 |
| 1 |
| 4 |
| 3 |
| 4 |
故答案为:>,<,=,<,=.
点评:本题主要考查了学生根据题目特点采用不同的方法来比较分数大小的能力.
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