要使“341×□”的积是三位数,□内最大可以填 ;要使积是四位数,□内最小可填 .
÷4== :20= %= 折.
24÷ = :16=0.375== %.
:24=== ÷16= %
= :35=5:7= ÷21=.
== ÷20=6: = %= 折.