问题 填空题

0.4:2化成最简整数比是______:______,这两个比组成的比例是______.

答案

(1)0.4:2,

=(0.4×10):(2×10),

=4:20,

=(4÷4):(20÷4),

=1:5;

(2)0.4:2=1:5;

故答案为:1,5;0.4:2=1:5.

解答题
单项选择题