题目内容

7
9
+
5
6

=
7
18
-
5
18

=
2
18

=
1
9
改正：

×；
改正：
7
9
+
5
6
，
=
14
18
+
15
18
，
=
29
18
．
练习册系列答案
相关题目
直接写出复数．
3
5
×
1
2
=		1÷
2
3
=
4
5
÷8=		7×
2
7
=
3
8
×12=
1
5
×
16
25
=
1
4
-
1
5
=
1
3
+
1
4
=
9
10
÷
3
20
=		14÷
7
8
=
1
5
+
3
5
=
3
8
-
1
8
=
4
9
+
3
9
=
2
3
+
1
3
=
3
5
-
1
5
=
3
8
+
1
8
=
2
3
-
1
3
=
3
7
-
3
7
=
1
6
+
5
6
=
4
9
-
3
9
=
3
7
+
3
7
=
3
4
-
1
4
=
看谁算得又对又快
130×7=23+12=0.32+3.2=47×7÷47×7=
3
4
-
1
3
=
3
8
÷
5
8
=
1
3
÷
3
5
=
3
8
×
5
8
=
64÷0.4=
1
9
÷
8
9
×9=
5
7
-
5
7
×0=		12×（
2
3
+
1
4
）=
13
24
÷
1
6
=
2
3
：
3
4
=		0.1÷0.01=
1
3
×3÷3=
直接写出得数．
3
5
+
2
5
=
7
9
-
5
9
=
7
15
-
2
15
=
1
2
+
1
2
=
1-
3
7
=
1
12
+
5
12
=
1
5
-
1
5
=
4
5
-
2
5
=
6-
2
7
=
3
4
+
2
4
=
9
8
-1=		 2+
2
3
=
甲数是
2
3
，乙数是
2
9
，甲、乙两数的和是______，甲、乙两数的差是______．
直接写得数
2
5
-
1
4
=
1
2
-
1
4
=
7
10
+
1
5
=		 1-
3
4
=
1
2
+
5
6
=
1
3
-
1
9
=
直接写得数．
4
9
+
2
9
=
3
8
+
3
8
=
8
11
-
5
11
=
3
10
+
2
5
=		 1-
4
9
+
5
9
=
1-
5
12
=
9
13
-
4
13
=		 1-
3
8
-
1
8
=		 4-
4
5
-
1
5
=		 5-
3
7
-
4
7
=
小李身高
8
5
米，小张比小李高
1
20
米，小王又比小张高
1
50
米，小王和小张的身高各是多少米？

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