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4.75×1.1-4×0.1-4如何用简便计算
2个回答
展开全部
4.75×1.1-4×0.1-4
=4.75×1.1-0.4-4
=4.75×1.1−(0.4+4)
=4.75×1.1-4.4
=4.75×1.1-4×1.1
=1.1×(4.75-4)
=1.1×0.75
=0.825
=4.75×1.1-0.4-4
=4.75×1.1−(0.4+4)
=4.75×1.1-4.4
=4.75×1.1-4×1.1
=1.1×(4.75-4)
=1.1×0.75
=0.825
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