题目内容
把结果小于
的算式后面的“☆”涂成你喜欢的颜色.
+
☆
+
☆
-
☆
-
☆
+
☆
-
☆
1-
-
☆
+
-
☆
| 1 |
| 2 |
| 2 |
| 3 |
| 1 |
| 6 |
| 4 |
| 15 |
| 5 |
| 6 |
| 5 |
| 6 |
| 5 |
| 8 |
| 14 |
| 15 |
| 1 |
| 20 |
| 1 |
| 8 |
| 1 |
| 4 |
| 5 |
| 12 |
| 7 |
| 18 |
1-
| 1 |
| 4 |
| 1 |
| 3 |
| 2 |
| 9 |
| 1 |
| 2 |
| 1 |
| 3 |
分析:异分母分数相加减,先通分,变成同分母的分数相加减,再计算,由此计算即可求解,再找出运算结果比
小的即可.
| 1 |
| 2 |
解答:解:
+
=
,
+
=
,
-
=
,
-
=
,
+
=
,
-
=
,
1-
-
=
,
+
-
=
,
.
| 2 |
| 3 |
| 1 |
| 6 |
| 5 |
| 6 |
| 4 |
| 15 |
| 5 |
| 6 |
| 33 |
| 30 |
| 5 |
| 6 |
| 5 |
| 8 |
| 5 |
| 24 |
| 14 |
| 15 |
| 1 |
| 20 |
| 53 |
| 60 |
| 1 |
| 8 |
| 1 |
| 4 |
| 3 |
| 8 |
| 5 |
| 12 |
| 7 |
| 18 |
| 1 |
| 36 |
1-
| 1 |
| 4 |
| 1 |
| 3 |
| 5 |
| 12 |
| 2 |
| 9 |
| 1 |
| 2 |
| 1 |
| 3 |
| 7 |
| 18 |
点评:本题考查了分数加减法的计算方法,以及分数比较大小的方法.
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