12.5×6.4×0.25 12.87-1.17-8.83 （2.8+4.7）除于0.25×0.412.5×6.4×0.2512.87-1.17-8.83（2.8+4.7）除于0.25×0.4【17.5-（5.13+4.87）×0.25】除于0.05递等式,急.

12.5×6.4×0.25 12.87-1.17-8.83 （2.8+4.7）除于0.25×0.412.5×6.4×0.2512.87-1.17-8.83（2.8+4.7）除于0.25×0.4【17.5-（5.13+4.87）×0.25】除于0.05递等式,急. 10.63-2.53-3.47+8.54.12.5乘6.4 乘0.25能巧算就巧算 6.4乘0.25乘12.5的简便算法 6.4乘12.5乘0.25怎么巧算 6.4/0.25/12.5怎样简算,求答案! (6.4+6.4+6.4+6.4)*0.25简便算法 6.4乘0.25乘12.5的简便就怎样计算帮我一下吧 12.5乘6.4巧算 12.5*6.4*25 简便计算 12.5×0.25×32简算 0.25×32×1.7×12.5 9.6*0.25*12.5巧算 64*12.5*0.25*0.05 0.8×0.25×0.4×12.5 0.46*2.5+6.4*0.25-0.25 简便, 1.25×6.4×0.25简便计算. 24乘以12.5减12.5除以0.25 6.4×12.5×25×17简便方法计算