999×999+1999 999×222+333× - 知识问答

999×999+1999 999×222+333×334

1个回答

999×999+1999
=999×(1000-1)+1999
=999×1000 -999+1999
=999000+1000
=1 000 000
999×222+333×334
=333x3x222+333x334
=333x(666+334)
=333x1000
=333 000

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