5.4x19.9+0.54怎样用简便计算?

2025-01-21 03:00:56
推荐回答(1个)
回答1:

5.4x19.9+0.54
=5.4x19.9+5.4x0.1
=5.4x(19.9+0.1)
=5.4X20
=108