比值 24:3分之8=24×3/8=9 35:5.6=350÷56=25/49分之2:6分之5 =2/9×6/5=4/1515:125 =3/258分之1:4 =1/320.75：20分之3=0.75×20/3=5整数比0.8:10 =8：:10=2:254分之1:9=1:36 4:0.25 =400:25=16:10.36:0.27 =36:27=4...