分出一半。○○○○○○○○○○○○○○○○○○○○( )=( )+( )
﹦24: ﹦ ÷20﹦ %
÷ ==9: = (小数)
÷ == %== : = 折= 成.
= ÷32=( 0.125 )填小数=6:( )=12.5%.
== :32=15÷ = (填小数)