1990ᘧ࿾9999锧999锧99锧9怎么简便计算

2025-03-22 03:32:44
推荐回答(2个)
回答1:

怎么简便计算
1990✖️9999+999+99+9
=1990✖️9999+1990一883
=1990✖️(9999+1)一883
=1990x10000一883
=19900000一883
=19899117

回答2:

=1990*(10000-1)+1000-1+100-1+10-1
=1990*10000-1990+1000+100+10-3
=19900000-883
=19899117