3.6x3.6+2.5x2.5-1.5ⅹ1.5(脱式计算,简便)?

2025-03-11 04:41:06
推荐回答(1个)
回答1:

简便计算
3.6x3.6+2.5x2.5-1.5x1.5
=12.96+6.25-2.25
=12.96+(6.25-2.25)
=12.96+4
=16.96