在分数中,当x= 时,是最大的真分数;当x= 时,是最小的假分数.
0.6== ÷30= %
9÷ =0.75= :24= %= 折.
9÷ =0.75== :36= %
6÷ = /16=0.25= :4= %
25÷ =6: =0.5.