在横线里填上“升”或“毫升”:一瓶去污剂200 一桶蓖麻油3 .
9÷ =0.75= :24= %= 折.
9÷ =0.75== :36= %
6÷ = /16=0.25= :4= %
25÷ =6: =0.5.
: == ÷20═ %