25.6×4.2+2.3×25.6-5.6×6.5简便运算怎么写?

2025-04-16 03:55:01
推荐回答(1个)
回答1:

25.6×4.2+2.3×25.6-5.6×6.5
=25.6x(4.2+2.3)-5.6x6.5
=25.6x6.5-5.6x6.5
=6.5x(25.6-5.6)
=6.5x20
=130