题目内容

直接写出得数．
1
2
+
1
3
=
3
4
-
1
2
=
1
9
+
8
9
=		1-
3
8
-
5
8
=
5
7
-
5
14
=
1
3
-
1
4
=
1
3
-
1
5
=
4
5
-
3
7
+
3
7
=

1
2
+
1
3
=
5
6
3
4
-
1
2
=
1
4
1
9
+
8
9
=1		1-
3
8
-
5
8
=0
5
7
-
5
14
=
5
14
1
3
-
1
4
=
1
12
1
3
-
1
5
=
2
15
4
5
-
3
7
+
3
7
=
4
5
练习册系列答案
相关题目
某工厂去年上半年完成全年计划任务的
11
20
，下半年完成全年计划任务的
4
9
，去年这个厂完成了年计划的任务吗？为什么？
计算．
1
6
+
1
8
+
1
24
=
1-
1
14
-
3
7
=
1
4
+
7
20
-
3
20
=
8
15
+
4
15
-
7
15
=
直接写出得数．
2-
1
3
=		3.6+4=700÷25÷4=
8
9
-0÷
8
9
=		1.5×3+1.5=3×
3
7
÷
3
7
×3=
1
3
+
1
4
=
5
6
-
1
2
=
3
8
×6=
3
10
÷
3
4
=		9-0.56=1.25+
3
4
=
1.2÷
6
7
=		32×0.125=
2
9
×
3
8
÷
3
8
=
1
3
÷3-
1
9
=
1
3
+
2
3
÷
2
3
×
1
3
=
直接写出得数
5
8
-
3
8
=
3
7
+
4
7
=
5
6
-
1
2
=
1-
7
9
=
1
5
+
1
6
=
3
4
+
2
3
=
直接写出得数．
5
6
-
1
6
=
3
8
+
1
8
=
1
7
-
1
7
=
2
5
+
3
5
=
5
4
-
1
4
=
10
9
-
8
9
=
计算．
2
3
-
3
5
8
9
+
4
5
-
13
15
17
12
-
3
4
+
1
3
．
填一填．

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