题目内容

下面各题怎样简便怎样算.
①0.375×5.8+
5
8
×5.8
②12÷
4
7
-20×5%
(4.16×
9
11
+3
2
11
×4.16)×25
(1)0.375×5.8+
5
8
×5.8,
=5.8×(0.375+
5
8
),
=5.8×(
3
8
+
5
8
),
=5.8×1,
=5.8;

(2)12÷
4
7
-20×5%,
=12×
7
4
-20×
1
20

=21-1,
=20;

(3)(4.16×
9
11
+3
2
11
×4.16)×25,
=[4.16×(
9
11
+3
2
11
)]×25,
=[4.16×4]×25,
=4.16×4×25,
=4.16×(4×25),
=4.16×100,
=416.
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