题目内容

怎样简便就怎样算.
4
9
×
1
5
÷
4
5
36×(
2
3
+
1
6
-
3
4
1
8
×58+42÷8
4
5
÷
5
8
-
1
2
÷
5
8
4-
5
11
-
6
11
(15-14×
4
7
)×
8
21
3
7
×
1
15
+
4
7
÷15
(6-
1
8
×32)+
3
4
(1)
4
9
×
1
5
÷
4
5

=
4
45
÷
4
5

=
1
9


(2)36×(
2
3
+
1
6
-
3
4
),
=36×
2
3
+36×
1
6
-36×
3
4

=24+6-27,
=3;

(3)
1
8
×58+42÷8,
=(58+42)×
1
8

=100×
1
8

=12.5;

(4)
4
5
÷
5
8
-
1
2
÷
5
8

=(
4
5
-
1
2
)×
8
5

=
3
10
×
8
5

=
12
25


(5)4-
5
11
-
6
11

=4-(
5
11
+
6
11
),
=4-1,
=3;

(6)(15-14×
4
7
)×
8
21

=(15-8)×
8
21

=7×
8
21

=2
2
3


(7)
3
7
×
1
15
+
4
7
÷15,
=(
3
7
+
4
7
)×
1
15

=1×
1
15

=
1
15


(8)(6-
1
8
×32)+
3
4

=(6-4)+
3
4

=2+
3
4

=2.75.
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