算式□÷4=12…□中,被除数最大是 ,最小是 .
把小数化成分数,把分数化成小数. 0.05= = = 0. .
=0.75=6: = %= 折.
将45%化成小数后应为 .
1: ==25÷ = %
= = 折= (填小数).