题目内容

计算下面各题(能简便方法计算的,要写出简算过程)
4
1
6
+3.9+5
5
6
+6.1
3
4
×
4
5
+
1
5
×
3
4

4-(
3
5
+
3
5
÷
12
5

3
10
÷[
2
5
×(5
3
8
-3
3
8
)].
(1)4
1
6
+3.9+5
5
6
+6.1
=(4
1
6
+5
5
6
)+(3.9+6.1),
=10+10,
=20;

(2)
3
4
×
4
5
+
1
5
×
3
4

=
3
4
×(
4
5
+
1
5
),
=
3
4


(3)4-(
3
5
+
3
5
÷
12
5

=4-(
3
5
+
3
5
×
5
12
),
=4-(
3
5
+
1
4
),
=4-(
12
20
+
5
20
),
=4-
17
20

=3
3
20


(4)
3
10
÷[
2
5
×(5
3
8
-3
3
8
)]
=
3
10
÷[
2
5
×2],
=
3
10
×
5
4

=
3
8
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