问题 解答题
用递等式计算.
5
6
÷
1
4
×
3
5
20-12÷
4
5
8-
2
3
÷
1
4
-
4
3
48048÷12+889÷(
7
9
-
2
3
)×3
(1-0.8×
3
4
)÷
4
5
答案

(1)

5
6
÷
1
4
×
3
5

=

10
3
×
3
5

=2;

(2)20-12÷

4
5

=20-15,

=5;

(3)8-

2
3
÷
1
4
-
4
3

=8-

8
3
-
4
3

=8-(

8
3
+
4
3
),

=8-4,

=4;

(4)48048÷12+88,

=4004+88,

=4092;

(5)9÷(

7
9
-
2
3
)×3,

=9÷

1
9
×3,

=81×3,

=243;

(6)(1-0.8×

3
4
)÷
4
5

=(1-0.6)÷

4
5

=0.4÷

4
5

=0.5.

问答题
问答题 简答题