34x4x5简便方法
第1个回答 2018-01-08
解:34X4X5=34X(4X5)=34X20=680本回答被提问者采纳
第2个回答 2018-01-07
34x4x5
=34x(4x5)
=34x20
=680
=34x(4x5)
=34x20
=680
第3个回答 2018-01-07
680
第4个回答 2018-01-07
34x4x5
=34x(4x5)
=34x20
=680
=34x(4x5)
=34x20
=680