六(1)班有男生27人,女生18人,女生人数与全班人数的比是 ;男生比女生多 .(几分之几)
:20==80%=20÷ = (填小数)
==12÷ = (填小数)
=0.75=( )÷8( )%=24:( )
= :0.8=0.75= ÷12= %.
: =6÷( )==0.75.