我来读一读: 223705800读作( ) 287000000000读作( ) 476030000读作( ) 38500005读作( )
==12÷ = (填小数)
=0.75=( )÷8( )%=24:( )
= :0.8=0.75= ÷12= %.
: =6÷( )==0.75.
== ÷10= 小数= :25.