精英家教网 > 小学数学 > 题目详情
1
2
-
1
5
=
2
3
+
1
4
=
1
13
+
7
13
=
5
7
-
2
7
=
3
8
-
3
8
=
7
10
-
7
20
=
1
4
+
3
8
=
4
7
-
1
6
=
1-
1
5
-
2
5
=
5
9
+
4
9
=
分析:根据分数的加减法进行计算即可得到答案.
解答:
解:
1
2
-
1
5
=
3
10
2
3
+
1
4
=
11
12
1
13
+
7
13
=
8
13
5
7
-
2
7
=
3
7
3
8
-
3
8
=0
7
10
-
7
20
=
7
20
1
4
+
3
8
=
5
8
4
7
-
1
6
=
17
42
1-
1
5
-
2
5
=
2
5
5
9
+
4
9
=1
故填:
3
10
11
12
8
13
3
7
,0,
7
20
5
8
17
42
2
5
,1.
点评:此题主要考查的是分数的加减法运算.
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