题目内容

直接写出得数．
2-
7
8
=		0÷
1
5
÷
1
3
=
3
5
+3=		134-34=
5
16
×
16
5
=
3
11
÷
1
8
×
1
8
=
7
9
-
1
3
=		4×
5
8
=
2-
7
8
=
9
8
0÷
1
5
÷
1
3
=0
3
5
+3=3
3
5
134-34=100
5
16
×
16
5
=1
3
11
÷
1
8
×
1
8
=
3
11
7
9
-
1
3
=
4
9
4×
5
8
=
5
2
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相关题目
计算：
7
8
+
1
4
-
1
8
+
3
4
7
9
-（
1
3
+
4
9
）		2.6-1
1
5
+
3
4
0.5-
1
3
+
1
8
．
简算的要简算．
①1-
3
11
-
7
11

②
4
9
+
5
6
-
4
9
．
观察下面各式，算一算，你能发现什么规律？
9
2
+
9
7
=
11
5
+
11
6
=
8
3
+
8
5
=
9
2
×
9
7
=
11
5
×
11
6
=
8
3
×
8
5
=
1
6
+
2
3
=		2-
2
11
=
6
11
÷
2
33
=		1÷
1
4
-
1
4
-1=
4.5÷4.5÷
1
2
=
7
12
×2.4=		0.4+
1
4
=		（
5
9
-
1
6
）×18=
直接写出得数．
2
3
-
5
12
=		0.9-0.26=1.2×
5
6
=
4
15
÷
8
35
=
1-
3
8
÷
5
8
=		1.25×3×8=13-0.52=10.2-0.32-0.68=
直接写得数．
4
5
+
2
5
=		0÷
3
5
=
8
15
×6=		7.125-
1
8
=
8.4+8=3：0.5=6÷
3
20
=		100×0.1%=
5
6
-
1
5
=
3
8
×
4
9
=
3
7
÷
9
14
=		1÷5×
1
5
=
3
4
×
1
4
÷3=
3
5
×4+
3
5
=		2-
5
12
-
7
12
=
1
6
×5÷
1
6
×5=
______比
2
5
吨多
1
2
吨；50米比______多25%．
先估算，再计算．
1
3
+
5
6

3
4
-
1
10

3
5
+
1
4

7
8
+
5
7
．

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