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简便计算:5/19+1.4/19×5.76-0.213×14/19+14/190×6.37

来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/05/25 03:53:19
简便计算:5/19+1.4/19×5.76-0.213×14/19+14/190×6.37
5/19+1.4/19×5.76-0.213×14/19+14/190×6.37
=5/19+14/190×5.76-0.213×140/190+14/190×6.37
=5/19+14/190×5.76-2.13×14/190+14/190×6.37
=5/19+14/190×(5.76-2.13+6.37)
=5/19+14/190×10
=5/19+14/19
=1