怎样巧算这道题54×5×30+54×5×25+46×5×55

怎样巧算这道题54×5×30+54×5×25+46×5×55
2024-11-21 00:08:11
推荐回答(1个)
回答1:

怎样巧算这道题
54×5×30+54×5×25+46×5×55
=54x5x(30+25)+46x5x55
=54x5x55+46x5x55
=(54+46)x5x55
=100x275
=27500