题目内容

用合适的方法计算.
①35×12+350÷70
②54.2-
2
9
+4.8-
16
9

③0.7÷[(
5
6
-
1
4
)×24].
①35×12+350÷70,
=420+5,
=425;

②54.2-
2
9
+4.8-
16
9

=(54.2+4.8)-(
2
9
+
16
9
),
=59-2,
=57;

③0.7÷[(
5
6
-
1
4
)×24],
=0.7÷[
5
6
×24-
1
4
×24],
=0.7÷(20-6),
=0.7÷14,
=0.05.
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