在横线里填上“>”、“<”或“=”0.52 2.5 7.5+7.5+7.5+7.5 7.5×513×13 1325.6×6.5 5.6×5.6.
18: == %=1.8= ÷40.
= : = ÷25= %
5÷2= = :12= %.
= 0. (小数)= :25.
=0.6= ÷10=12: = %= 折.