一位数除四位数,商可能是四位数,也可能是三位数. .(判断对错)
÷4== :20= %= 折.
24÷ = :16=0.375== %.
:24=== ÷16= %
= :35=5:7= ÷21=.
== ÷20=6: = %= 折.