1升柴油6.10元,就是说1千克柴油6.10元. .
= %
=1:5= ÷40=40: = [填小数].
2= = = ÷ .
甲数是乙数的,甲乙两数的比是( : ),乙比甲多 ,甲比乙少 .
9: == ÷ =0.6.