题目内容

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

(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.
练习册系列答案
相关题目

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网