题目内容

直接写得数.
5
6
-
1
3
=
3
10
+
2
5
=
3
4
-
3
8
=
1
3
+
1
4
=
5
9
-
1
3
=
1
2
-
1
6
=
1-
4
9
=
7
8
+
1
2
=
5
6
-
3
5
=
5
6
+
3
4
=
2
3
-
1
6
=
3
8
-
3
8
=
考点:分数的加法和减法
专题:运算顺序及法则
分析:横向数:
(1)(3)(5)(6)(7)(9)(11)(12)依据分数减法计算方法解答,
(2)(4)(8)(10)依据分数加法计算方法解答.
解答:
解:
5
6
-
1
3
=
1
2
3
10
+
2
5
=
7
10
3
4
-
3
8
=
3
8
1
3
+
1
4
=
7
12
5
9
-
1
3
=
2
9
1
2
-
1
6
=
1
3
1-
4
9
=
5
9
7
8
+
1
2
=1
3
8
5
6
-
3
5
=
7
30
5
6
+
3
4
=1
7
12
2
3
-
1
6
=
1
2
3
8
-
3
8
=0
故答案为:
1
2
7
10
3
8
7
12
2
9
1
3
5
9
,1
3
8
7
30
,1
7
12
1
2
,0.
点评:依据分数加减法计算方法解决问题是本题考查知识点.
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