21.4一15.32一4.68+4.6的简便算法

2025-03-25 04:25:32
推荐回答(1个)
回答1:

21.4一15.32一4.68+4.6
=21.4+4.6一15.32一4.68
=(21.4+4.6)-(15.32+4.68)
=26-20
=6