题目内容

1
4
+
2
4
=
4
7
+
2
7
=
5
8
-
3
8
=
3
4
-
1
4
=
5
10
-
1
10
=
1-
5
6
=		1-
1
2
=
1
2
+
1
2
=
4
5
-
4
5
=
1
4
+
2
4
=
3
4
，
4
7
+
2
7
=
6
7
，
5
8
-
3
8
=
1
4
，
3
4
-
1
4
=
1
2
，
5
10
-
1
10
=
2
5
，
1-
5
6
=
1
6
，		1-
1
2
=
1
2
，
1
2
+
1
2
=1，
4
5
-
4
5
=0．
练习册系列答案
相关题目
直接写得数；
2
5
+
1
5
=
5
6
+
1
6
=		1-
1
3
=
1
4
+
3
4
=
1
3
+
1
3
=
5
10
+
4
10
=
2
7
+
2
7
=
8
9
-
4
9
=
计算．
1-
2
3
=
3
7
+
2
7
=
7
7
-
4
7
=
2
5
+
3
5
=
9
10
-
3
10
=
3
4
-
1
4
=		1-
3
4
=
2
8
+
4
8
=
口算
1
3
+
1
4
=		10÷
2
5
=
3
5
÷
9
10
=		1÷
7
8
=
2
3
×
3
10
=
3
4
×
2
5
×
4
3
=		5×
1
10
+
1
2
=		8×
3
8
+8×
1
8
=
55×
1
11
÷
1
8
=
1
2
×
1
3
÷
1
2
×
1
3
=		0×
7
12
+
1
8
=
4
5
-
1
10
×4=
2
1
4
×2=		0.99×9+0.99=
9
4
×
1
27
=		1
1
2
×8+1
1
2
×2=
比较大小．
1-
2
13
______
1
2
；
1
6
+
2
9
______
2
3
；
3
4
+
1
4
______
1
5
+
4
5
．
计算．
11
18
+
2
15
5
7
-
6
15
17
24
+
1
12
7
8
-
2
3
3
8
-
2
7
5
14
+
4
21
．
看图计算下面各题．
3
6
+
2
6
=
　
3
4
+
1
4
=
水果店运来一批水果，第一天卖出这批水果的
1
9
，还剩______没卖．

（　　）-
()
()
=
()
()
．

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