题目内容

下面各题,怎样算简便就怎样算.
①9.56+4.875-
7
8
+1.44

3
4
÷6-
1
6
×
1
4
13÷(
1
4
+
5
6
3
4
8
9
×[
3
4
-(
7
16
-
1
4
)]
⑤[1-(
3
8
+
1
4
)]×
2
39
8
15
×[
5
6
÷(
7
9
-
1
3
)]
①9.56+4.875-
7
8
+1.44,
=(9.56+1.44)+(4.875-
7
8
),
=11+4,
=15;

3
4
÷6-
1
6
×
1
4

=
3
4
×
1
6
-
1
6
×
1
4

=
1
6
×(
3
4
-
1
4
),
=
1
6
×
1
2

=
1
12


③13÷(
1
4
+
5
6
)×
3
4

=13÷
13
12
×
3
4

=13×
12
13
×
3
4

=9;

8
9
×[
3
4
-(
7
16
-
1
4
)],
=
8
9
×[
3
4
-
3
16
],
=
8
9
×
9
16

=
1
2


⑤[1-(
3
8
+
1
4
)]×
2
39

=[1-
5
8
2
39

=
3
8
×
2
39

=
1
52


8
15
×[
5
6
÷(
7
9
-
1
3
)],
=
8
15
×[
5
6
÷
4
9
],
=
8
15
×
15
8

=1.
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