411-(405-389)的简便方法?

2023-01-28 11:11

2023-01-28 15:57
411-(405-389)的简便方法:
411-(405-389)
=411-405+389
=411+389-405
=800-405
=800-400-5

=395
更多回答
简便计算方法如下:
411-(405-389)
=411-405+389
=411+389-405
=800-405
=395
411-(405-389)的简便方法
411-(405-389)
=(411+389)-405
=800-405
=395
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