题目内容

怎样算简便就怎样算.
30-1.6÷
4
5
5
6
×(1-
3
4
)
3
5
×3+
2
5
1
4
×
1
15
+
1
3
×
1
4
1-
5
7
×
21
25
8
13
÷4×
5
6
7
9
÷
1
3
÷
14
9
5
14
÷
4
21
×0.64.
(1)30-1.6÷
4
5

=30-2
=28;

(2)
5
6
×(1-
3
4
)

=
5
6
×
1
4

=
5
24


(3)
3
5
×3+
2
5

=
9
5
+
2
5

=
11
5


(4)
1
4
×
1
15
+
1
3
×
1
4

=
1
4
×(
1
15
+
1
3
)

=
1
4
×
2
5

=
1
10


(5)1-
5
7
×
21
25

=1-
3
5

=
2
5


(6)
8
13
÷4×
5
6

=
2
13
×
5
6

=
5
39


(7)
7
9
÷
1
3
÷
14
9

=
7
3
÷
14
9

=
3
2


(8)
5
14
÷
4
21
×0.64
=
15
8
×0.64
=1.2.
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