题目内容

合理、灵活地计算.
0.45×14+86×45%
2
5
+
3
5
÷
9
10
(50%-
2
5
)×20.
(1)0.45×14+86×45%,
=0.45×(14+86),
=0.45×100,
=45;

(2)
2
5
+
3
5
÷
9
10

=
2
5
+
2
3

=
16
15


(3)(50%-
2
5
)×20,
=
1
2
×20-
2
5
×20,
=10-8,
=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