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999x222+333x334怎样巧算!!!!!!

化为(222+777)*222+333*(333+1)

333(3*222+334)

999x222+333x334 =333x3x222+333x334 =333x666+333x334 =333x(666+334) =333x1000 =333000

333x334+999x222 =333x334+333x666 =333x(334+666) =333x1000 =333000

333x334+999x222 =333x334+333x3x222 =333x334+333x666 =333x(334+666) =333x1000 =333000

999x222+333x334 =333×3×222+333×334 =333×666+333×334 =333×(666+334) =333×1000 =333000

999x222+333x334 =333x222x3+333x334 =333x(222x3+334) =333x(666+334) =333x1000 =333000

999x222十333x334 =333×3×222+333×334 =333×666+333×334 =333×(666+334) =333000

原式 =333x3x222+333x334 =333x666+333x334 =333x(666+334) =333x1000 =333000

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