题目内容

怎样算简便就怎样算.
4
9
×
1
5
÷
4
5
;
4-
5
11
-
6
11
;
1
8
×58+42÷8;
36×(
2
3
+
1
6
-
3
4
);
(15-14×
4
7
)×
8
21
;
4
5
÷
5
8
-
1
2
÷
5
8
.
(1)
4
9
×
1
5
÷
4
5

=
4
9
×
1
5
×
5
4
,
=
1
9
;

(2)4-
5
11
-
6
11

=4-(
5
11
+
6
11
),
=4-1,
=3;

(3)
1
8
×58+42÷8
=
1
8
×58+42×
1
8
,
=(58+42)×
1
8
,
=100×
1
8
,
=12.5;

(4)36×(
2
3
+
1
6
-
3
4
)
=36×
2
3
+36×
1
6
-36×
3
4
,
=24+6-27,
=3;

(5)(15-14×
4
7
)×
8
21

=(15-8)×
8
21
,
=7×
8
21
,
=
8
3
;

(6)
4
5
÷
5
8
-
1
2
÷
5
8

=
4
5
×
8
5
-
1
2
×
8
5
,
=(
4
5
-
1
2
)×
8
5
,
=
3
10
×
8
5
,
=
12
25
.
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