题目内容

计算(能简便的要简便)
5
6
+
3
4
-
1
3
5
6
+
4
9
+
5
9
1
2
+(
2
3
-
1
4
3-(
9
14
+
6
7
7
11
+
1
5
+
4
11
+
2
5
9
10
-(
3
4
-
1
6
(1)
5
6
+
3
4
-
1
3

=
19
12
-
1
3

=1
1
3


(2)
5
6
+
4
9
+
5
9

=
5
6
+(
4
9
+
5
9
),
=
5
6
+
1,
=1
5
6


(3)
1
2
+(
2
3
-
1
4
),
=
1
2
+
5
12

=
11
12


(4)3-(
9
14
+
6
7
),
=3-
21
14

=1
1
2


(5)
7
11
+
1
5
+
4
11
+
2
5

=(
7
11
+
4
11
)+(
1
5
+
2
5
),
=1+
3
5

=1
3
5


(6)
9
10
-(
3
4
-
1
6
),
=
9
10
-
7
12

=
19
60
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