( )>( )>( )>( )>( )>( )
4.8+2.1= 6.7-0.5= 0÷280= 264-(64+23)=
9-2.9= 4.2+8= 32-2×0= 6×6÷6×6=
0.5152>0.5152>0.5152>0.5152。