在横线里填上适当的数.5m2= dm2 4dm250cm2= cm25m6dm= m 2元7角5分= 元.
:20==3: =0.75= %
0.125== :16=5÷ .
= :24=0.5= ÷8=.
6÷ == %== : .
= %=6: == (写小数)