两个连续奇数的倒数之差是,这两个奇数的和是 .
==12÷ = (填小数)
=0.75=( )÷8( )%=24:( )
= :0.8=0.75= ÷12= %.
: =6÷( )==0.75.
== ÷10= 小数= :25.