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?
问题描述:
42.5×6.28-4.25×2.8简便算法
50.9-7.3×6.9
42.5×6.28-4.25×2.8简便的计算方法?
答
42.5×6.28-4.25×2.8简便算法
50.9-7.3×6.9
42.5×6.28-4.25×2.8简便的计算方法?