已知:○+○+○+△+△=14,△=○+○。那么○=" ______" ,△=" ______" 。(2)已知:○+○=△,△+△+△=□。那么:□=" ______" 个○。(3)已知:△+△+○=25,○=△+△+△。那么:△=" ______" ,○=" ______" 。
:20==80%=20÷ = (填小数)
==12÷ = (填小数)
=0.75=( )÷8( )%=24:( )
= :0.8=0.75= ÷12= %.
: =6÷( )==0.75.