题目内容

怎样简便就怎样算.
(5-
5
13
)×26
5
7
×
1
4
+
3
4
×
5
7
2
9
×
5
11
×27×33
1
12
+
5
6
)×24
1
4
+
3
4
×
3
1
19
43
×34+53×
19
43
-
19
43
(1)(5-
5
13
)×26
=5×26-
5
13
×26
=130-10
=120;

(2)
5
7
×
1
4
+
3
4
×
5
7

=
5
7
×(
1
4
+
3
4

=
5
7
×1
=
5
7


(3)
2
9
×
5
11
×27×33
=(
2
9
×27)×(
5
11
×33)
=6×15
=90;

(4)(
1
12
+
5
6
)×24
=
1
12
×24+
5
6
×24
=2+20
=22;

(5)
1
4
+
3
4
×
3
1

=
1
4
+
9
4

=
5
2


(6)
19
43
×34+53×
19
43
-
19
43

=
19
43
×(34+53-1)
=
19
43
×86
=38.
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