问题 填空题
化简比:0.6:0.8=______,
2
5
1
7
=______.
答案

(1)0.6:0.8,

=(0.6×5):(0.8×5),

=3:4;

(2)

2
5
1
7

=(

2
5
×35):(
1
7
×35),

=14:5;

故答案为:3:4;14:5.

判断题
填空题