题目内容

6.5-(1.6÷5-0.3)
7.2-2.7÷15-0.82
3
8
×31-1÷
3
8

9
10
÷[
1
2
×(
6
5
-
3
10
)]

(1)6.5-(1.6÷5-0.3),
=6.5-(0.32-0.3),
=6.5-0.02,
=6.48;

(2)7.2-2.7÷15-0.82,
=7.2-0.18-0.82,
=7.2-(0.18+0.82),
=7.2-1,
=6.2;

(3)
3
8
×31-1÷
3
8

=
93
8
-
8
3

=
215
24


(4)
9
10
÷[
1
2
×(
6
5
-
3
10
)]

=
9
10
÷[
1
2
×
9
10
]

=
9
10
÷
9
20

=2.
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