9999×7778+3333×6666怎么算

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9999×7778+3333×6666怎么算9999×7778+3333×6666怎么算9999×7778+3333×6666怎么算9999×7778+3333×6666原式=9999×7778+33

9999×7778+3333×6666怎么算
9999×7778+3333×6666怎么算

9999×7778+3333×6666怎么算
9999×7778+3333×6666
原式=9999×7778+3333×3×2222
=9999×7778+9999×2222
=9999×(7778+2222)
=9999×10000
=99990000