240×30= 240×=72000
99×0.9999 0.98×9.89.8 3.6×0.230.23
6÷5= 0.2÷0.4= 1.6÷0.8= 4÷7=
0.72÷4= 0.18÷0.6= 48÷0.8= 2÷6=