85-46-16= 85-( )
100-78+18= 100-( )
36÷3÷3= 36÷( )
32÷8×2=32÷( )
101×25= ×0.5= ×= 5+= 2.5× =
3.2÷8= 1.25- = 5× ÷5÷ = 1.25× ×0.8=