9.18-4.59-0.4用几简便计算怎么算?

2025-04-07 18:16:15
推荐回答(2个)
回答1:

9.18-4.59-0.4
=9.18-4.59-0.4-0.01+0.01
=9.18-(4.59+0.4+0.01)+0.01
=9.18-5+0.01
=4.18+0.01
=4.19

回答2:

9.18-4.59-0.4=9.18-(4.59+0.4)=9.18-4.99=9.18-(5-0.01)=9.18-5+0.01=4.18+0.01=4.19