题目内容

合理灵活地进行计算.
1
5
×8÷
16
25
4
25
×99+
4
25
7
10
÷
6
5
÷
21
32
[1-(
3
10
+
3
5
)]÷
4
5
3
4
×
1
9
×
3
2
(1)
1
5
×8÷
16
25

=
8
5
÷
16
25

=2.5;

(2)
4
25
×99+
4
25

=
4
25
×
(99+1),
=
4
25
×
100,
=16;

(3)
7
10
÷
6
5
÷
21
32

=
7
12
÷
21
32

=
8
9


(4)[1-(
3
10
+
3
5
)]÷
4
5

=[1-
9
10
4
5

=
1
10
÷
4
5

=
1
8


(5)
3
4
×
1
9
×
3
2

=
1
12
×
3
2

=
1
8
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