+= ﹣= 3.5×= 2÷0.5=
5.63-3= 0.5× = +0.75= 3.6÷60%=
4× ÷4× = 0.22= 0.25×16= 0.1+99×0.1=
101×25= ×0.5= ×= 5+= 2.5× =
3.2÷8= 1.25- = 5× ÷5÷ = 1.25× ×0.8=
0.5÷5%= 0.75× = 2+3%= 3a×4a=