题目内容

计算下面各题.
3
2
-
5
8
÷
3
4
×
3
5
3
7
+
1
4
÷
2
5
-
1
4
12
19
×
1
5
+
7
19
÷5
17
18
-(
5
9
+
1
6
9
26
5
2
-(
9
22
÷
36
55
-
3
8
)
12÷(
4
5
×4+
6
5
×4)
(1)
3
2
-
5
8
÷
3
4
×
3
5

=
3
2
-
5
8
×
4
3
×
3
5

=
3
2
-
1
2

=1;

(2)
3
7
+
1
4
÷
2
5
-
1
4

=
3
7
+
5
8
-
1
4

=
24
56
+
35
56
-
14
56

=
45
56


(3)
12
19
×
1
5
+
7
19
÷5
=
12
19
×
1
5
+
7
19
×
1
5

=(
12
19
+
7
19
)×
1
5

=1×
1
5

=
1
5


(4)
17
18
-(
5
9
+
1
6
)×
9
26

=
17
18
-
13
18
×
9
26

=
17
18
-
1
4

=
25
36


(5)
5
2
-(
9
22
÷
36
55
-
3
8

=
5
2
-(
5
8
-
3
8

=
5
2
-
1
4

=2
1
4


(6)12÷(
4
5
×4+
6
5
×4)
=12÷[(
4
5
+
6
5
)×4]
=12÷(2×4)
=12÷8
=1.5.
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