2.39乘以7.39.56乘以8.2的简便算法

2.39乘以7.39.56乘以8.2的简便算法
2025-05-19 03:09:56
推荐回答(1个)
回答1:

2.39乘以7.3+9.56乘以8.2的简便算法
2.39乘以7.3+9.56乘以8.2
=
2.39*7.3+2.39*4*8.2
=2.39*(7.3+32.8)
=2.39*40.1
=958.39