有2吨货物,一辆车4次可以运完,则这辆车每次能运 千克货物.
36÷ ==0.4=4: = %
:20==80%=20÷ = (填小数)
==12÷ = (填小数)
=0.75=( )÷8( )%=24:( )
= :0.8=0.75= ÷12= %.