55.5×55+555×5.5-550×1-1简便计算怎么做？

Question

如题所述

Answer 1

55.5×55+555×5.5-550×1-1
=55.5×55+55.5×55-55×10-1
=（55.5+55.5-10）×55-1
=101×55-1
=100×55+1×55-1
=5500+55-1
=5554本回答被网友采纳

Answer 2

55.5*55+555*5.5-550-1
=55.5*55+55.5*55-551
=2*55.5*55-551
=111*55-551
=6105-551
=5554