999乘以778+333乘以666怎么 简便 运算...
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999乘以778+333乘以666怎么简便运算...999乘以778+333乘以666怎么简便运算...999乘以778+333乘以666怎么简便运算...999×778+333×666=111×9×
999乘以778+333乘以666怎么 简便 运算...
999乘以778+333乘以666怎么 简便 运算
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999乘以778+333乘以666怎么 简便 运算...
999×778+333×666 =111×9×2×389+111×3×6×111 =111×18×(389+111) =111×(18×500) =111×9000 =999000
999乘以778+333乘以666怎么 简便 运算...
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