4□8÷4,要使商之间有0,并且没有余数,□最小可以填 .
:20=0.8=12÷ == %= (填成数)
= %= : = (小数)
: =37.5%== ÷ = (填小数)
=0.75== : = %
= : =75%=3÷ = .(填小数)