250+50= 140×2= 25×30= 101× 20=
64 ÷4= 30×15= 6300÷70= 248-40=
101×25= ×0.5= ×= 5+= 2.5× =
3.2÷8= 1.25- = 5× ÷5÷ = 1.25× ×0.8=