题目内容
将下列算式按得数从小到大排列.
+
+
1-
+
+
+
+
<
+
+
<
+
+
<
+
+
.
| 1 |
| 8 |
| 2 |
| 8 |
| 2 |
| 8 |
| 5 |
| 8 |
| 3 |
| 8 |
| 5 |
| 8 |
| 1 |
| 8 |
| 5 |
| 8 |
| 3 |
| 8 |
| 1 |
| 8 |
| 2 |
| 8 |
| 1 |
| 8 |
| 2 |
| 8 |
1-
| 3 |
| 8 |
1-
<| 3 |
| 8 |
| 5 |
| 8 |
| 1 |
| 8 |
| 5 |
| 8 |
| 1 |
| 8 |
| 2 |
| 8 |
| 5 |
| 8 |
| 2 |
| 8 |
| 5 |
| 8 |
| 5 |
| 8 |
| 3 |
| 8 |
| 5 |
| 8 |
| 3 |
| 8 |
分析:首先按同分母分数加减法计算出得数,再利用同分母分数大小比较的方法比较即可.
解答:解:
+
=
,
+
=
,1-
=
,
+
=
,
+
=1;
因为
<
<
<
<1,
所以
+
<1-
<
+
<
+
<
+
;
故答案为:
+
,1-
,
+
,
+
,
+
.
| 1 |
| 8 |
| 2 |
| 8 |
| 3 |
| 8 |
| 2 |
| 8 |
| 5 |
| 8 |
| 7 |
| 8 |
| 3 |
| 8 |
| 5 |
| 8 |
| 5 |
| 8 |
| 1 |
| 8 |
| 6 |
| 8 |
| 5 |
| 8 |
| 3 |
| 8 |
因为
| 3 |
| 8 |
| 5 |
| 8 |
| 6 |
| 8 |
| 7 |
| 8 |
所以
| 1 |
| 8 |
| 2 |
| 8 |
| 3 |
| 8 |
| 5 |
| 8 |
| 1 |
| 8 |
| 2 |
| 8 |
| 5 |
| 8 |
| 5 |
| 8 |
| 3 |
| 8 |
故答案为:
| 1 |
| 8 |
| 2 |
| 8 |
| 3 |
| 8 |
| 5 |
| 8 |
| 1 |
| 8 |
| 2 |
| 8 |
| 5 |
| 8 |
| 5 |
| 8 |
| 3 |
| 8 |
点评:此题考查同分母分数加减法:分母不变,分子相加减;同分母分数大小比较的方法:分子大的那个分数就大.
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