42.5×6.28-4.25×2.8简便算法50.9-7.3×6.942.5×6.28-4.25×2.8简便的计算方法?

42.5×6.28-4.25×2.8简便算法50.9-7.3×6.942.5×6.28-4.25×2.8简便的计算方法? 2.8×75简便运算简便! 求教4.25*166-42.5*14.2+24*5.75的简便算法 4.25x3.5+42.5x6.5的简便计算 简便 42.5+2.8×2.5÷0.7的简便运算 15.7-3.75-4.25 简便算 17.5-4.25-5.75简便计算 1.75/0.5+4.25*2 简便? (2.8-2.8*0.7)/11.2怎么算能简便就简便 14.56-(5.56-2.8)简便方法是什么只要简便计算的, 12.56+2.8-8.56简便计算 2.8÷0.25简便计算 简便计算 1.6×2.8×1.25 简便运算 4.5-2.8-0.7 1.28*5.37-2.8*0.537简便 3.45×0.6×2.8简便计算 80.5*2.8+143.5简便方法