在横线里填上“>”、“<”或“=”.0.49 80.1% 0.051 5%1 109% 1 125% 112.5% 1.
25÷ =6: =0.5.
: == ÷20═ %
=4÷ = :25= %
5÷8用分数表示是 .
÷ =0.375.