0.68÷4= 10.5÷5= 0.7-0.28= 0.24÷3= 1-0.03=
0.72÷0.12= 0.18÷1.8= 9.3+2.83= 6.06÷6= 3.5×4.5=
5.63-3= 0.5× = +0.75= 3.6÷60%=
4× ÷4× = 0.22= 0.25×16= 0.1+99×0.1=