题目内容

计算下列各题,能简便的要简算:
33-
7
9
-
2
9

13
25
-
13
50
+
1
5

1
2
+(
2
3
-
1
4

5
6
+
3
4
-
1
3
1
2
+
4
5
-
5
6
5
8
-
2
3
+
3
8
19
14
-
1
4
-
5
14
+
1
4
2
3
-
2
9
+
1
3
-
7
9
(1)33-
7
9
-
2
9

=33-(
7
9
+
2
9
),
=33-1,
=32;

(2)
13
25
-
13
50
+
1
5

=
13
50
+
1
5

=
23
50


(3)
1
2
+(
2
3
-
1
4
),
=
1
2
+
1
12

=
7
12


(4)
1
2
+
4
5
-
5
6

=
13
10
-
5
6

=
7
15


(5)
5
8
-
2
3
+
3
8

=(
5
8
+
3
8
)-
2
3

=1-
2
3

=
1
3


(6)
19
14
-
1
4
-
5
14
+
1
4

=(
19
14
-
5
14
)+(
1
4
-
1
4
),
=1-0,
=1.
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