23456除以630的商是 位数,商的最高位应是 .
÷ == %== : = 折= 成.
= ÷32=( 0.125 )填小数=6:( )=12.5%.
== :32=15÷ = (填小数)
=18: =0.6== %= 折.
÷6=6: =1.5= %