0.36×0.25=0.9×0.4×0.25=0.9×（0.4×0.25）=0.9×0.1=0.09如果帮到你，请记得采纳，O(∩_∩)O谢谢
0.36×0.25 =0.09×4×0.25=0.09×1=0.09
0.36*0.25=0.6*0.6*0.5*0.5=0.6*0.5*0.6*0.5=0.3*0.3=0.09
﹙0.36÷4﹚×﹙0.25×4﹚=0.09
化为0.09×4×0.25
