12÷0.25=
6÷0.24=
0.082×0.75=
2.582 1.6 3.4
(保留两位小数)
20-1.6= 2+4.8= 2.4÷0.6= 3.2×0.5=
92= 43= 0.9÷0.03 = 30×1.2=
4.72×0.99 4.72 117÷1.3 117