9999*7778+3333*6666 怎么简算?9999*7778+3333*6666怎么简算?
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9999*7778+3333*6666 怎么简算?9999*7778+3333*6666怎么简算?
9999*7778+3333*6666 怎么简算?
9999*7778+3333*6666
怎么简算?
9999*7778+3333*6666 怎么简算?9999*7778+3333*6666怎么简算?
原式等于9999×(7778+2222)
=9999*7778+9999*2=9999*(7778+2)=9999*8000=10000*8000-8000=79992000
9999*7778+3333*6666
=9999×7778+(3×1111)×(2×3×1111)
=9999×7778+(3×3×1111)×(2×1111)
=9999×7778+9999×2222
=9999×(7778+2222)
=99990000
简单
9999*7778+3333*6666
9999*7778+3333*6666
3333*6666+9999*7778
7778*9999+3333*6666=?7778×9999×3333×6666=?
7778*(-9999)+(-3333)*6666计算
9999*7778+3333*6666=?
9999×7778+3333×6666 巧算.
9999×7778+3333×6666的简便计算?
9999*7778+3333*6666(简算)
简算9999乘7778+3333乘6666
简便计算 9999×7778+3333×6666
简便计算:6666×3333+9999×7778 急用!
7778*(-9999)+(-3333)*6666
9999×7778+3333×6666怎么算
9999*7778+3333*6666 简便算法
9999*7778+3333*6666怎么简算?
3333*7778+9999*6666简便算法,
9999×7778+3333×6666 用简便算法,