如题所述
简便计算
510×42+580×51
=42x510+58x510
=(42+58)x510
=100x510
=51000
510×42+580×51
=42x510+58x510
=(42+58)x510
=100x510
=51000
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第1个回答 2020-11-19
510×42+580×51
=510×42+58×510
=510×(42+58)
=51000
=510×42+58×510
=510×(42+58)
=51000