411-(405-389)的简便方法?

2023-01-28 11:11

2023-01-28 11:43
411-(405-389)的简便方法
411-(405-389)
=(411+389)-405
=800-405
=395
更多回答
411-(405-389)的简便方法:
411-(405-389)
=411-405+389
=411+389-405
=800-405
=800-400-5

=395
简便计算方法如下:
411-(405-389)
=411-405+389
=411+389-405
=800-405
=395