问题 解答题
合理、灵活地计算.
7
11
÷14÷
8
33
18
25
×
10
21
÷
4
5
2
3
÷
5
8
+
1
3
÷
5
8
2-
6
13
÷
9
26
-
2
3
2
3
×[(
5
8
+
3
4
)÷
5
8
].
答案

(1)

7
11
÷14÷
8
33

=

1
22
×
33
8

=

3
16

(2)

18
25
×
10
21
÷
4
5

=

12
35
×
5
4

=

3
7

(3)

2
3
÷
5
8
+
1
3
÷
5
8

=

2
3
×
8
5
+
1
3
×
8
5

=(

2
3
+
1
3
)×
8
5

=1×

8
5

=

8
5

(4)2-

6
13
÷
9
26
-
2
3

=2-

4
3
-
2
3

=2-(

4
3
+
2
3
),

=2-2,

=0;

(5)

2
3
×[(
5
8
+
3
4
)÷
5
8
],

=

2
3
×[
5
8
×
8
5
+
3
4
×
8
5
],

=

2
3
×(1+
6
5
),

=

2
3
×
11
5

=

22
15

计算题
单项选择题