4.6乘7.7加54乘0.77怎么简便

4.6乘7.7加54乘0.77怎么简便
2025-04-08 03:19:10
推荐回答(1个)
回答1:

4.6乘7.7加54乘0.77
=4.6x7.7+54x0.77
=7.7x(4.6+5.7)
=7.7x10
=77