题目内容

8
9
-
5
12
=
32
36
-
20
36
=
1
3
______．（判断对错）

8
9
-
5
12
，
=
32
36
-
15
36
，
=
17
36
．
故答案为：×．
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相关题目
1-
2
3
=______
______个______减______个
1
3
，剩______个
1
3
，就是
()
()
．
分数加减法的法则和整、小数加减法法则一样，都是把相同单位的个数相加减．______．
直接写出得数．
2
9
+
5
9
=		 1-
6
7
=
3
5
+
4
5
=
7
10
-
3
10
=
5
8
-
1
4
=
2
3
+
1
6
=
1
5
-
1
8
=
2
3
+
4
9
=
直接写得数．
1
2
-
1
8
=
1
2
-
1
3
=		 2+
4
9
=		 3-
2
3
=
5
9
+
1
3
=
4
5
-
1
2
=
1
6
+
2
3
=
3
4
-
5
8
=
1
6
+
5
6
=
3
10
+
2
10
=
17
25
-
7
25
=
2
9
+
5
9
+
8
9
=		 1-
3
8
-
1
8
=
2
13
+
8
13
-
7
13
=
2
5
+
2
9
+
7
9
7
13
+
3
4
-
6
13
2
3
-
2
7
+
5
7
9
8
-
1
7
+
1
8
-
6
7
5
9
-
1
3
+
5
6
11
8
-（
3
10
+
3
8
）-
7
10
．
直接写得数．
5
6
+
5
6
=
5
17
+
7
17
=		 1-
2
7
=
7
16
-
5
16
=
19
91
-
12
91
=
7
13
+
6
13
=
19
17
-1=
7
16
-
3
16
=
3-1
1
7
=
7
5
+
6
5
=
把下面的假分数化成整数或带分数，把小数化成分数
24
11
=______
51
17
=______0.12=
()
()
 1.5=
()
()
．

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