12.5×﹙0.8+0.4﹚×2.5怎么巧算

12.5×﹙0.8+0.4﹚×2.5怎么巧算 0.8*0.25*0.4*12.5简便怎么算 12.5*0.4*2.5*8怎么简便计算? 12.5*0.4*2.5*8怎么简便计算? 0.8*(2.5+1.25)*0.4怎么巧算 2.5x（12.5+0.4）x8怎么巧算 12.5×2.5×（80＋0.4）简便计算怎么做 12.5×(4×0.8)×2.5 用简便方法计算怎么做? 12.5×2.5×0.8×4简便算法怎么算 0.8*72.4*12.5怎么简算 12.5×18.3×0.8怎么简算? 12.5*0.9*0.8怎么简便计算 12.5*7.2*0.8简便怎么算 (12.5+1.25+0.25)*0.8怎么简便 12.5×(32+16)×2.5怎么巧算 2.5*12.5*6.4*1.7怎么巧算? 9.6除以0.8除以0.4怎么简便 0.25×1.25×0.4×0.8怎么简便计算.