简算999.3-998.2+997.3-996.2+...3.3-2.2+1.3-0.2

2025-01-06 11:14:23
推荐回答(2个)
回答1:

=(999.3-998.2)+(997.3-996.2)+……+(3.3-2.2)+(1.3-0.2)
=1.1+1.1+……+1.1+1.1
=1.1*50
=55

回答2:

550