四年级简便计算29ᠧ54+29ᠧ47-29的计算过程?

2025-06-22 17:35:08
推荐回答(2个)
回答1:

计算过程(54十47)X29一29

回答2:

29x54+29x47-29
=29x(54+47-1)
=29x100
=2900