4.5 5.5-4.5怎么简便运算?

2025-03-20 21:49:09
推荐回答(2个)
回答(1):

4.5x5.5-4.5x1
=4.5x(5.5-1)
=4.5x4.5
=20.25

回答(2):

简便计算
4.5+ 5.5-4.5
=4.5-4.5+5.5
=0+5.5
=5.5