2222X999十3333X3334...简算?

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2222X999十3333X3334...简算?
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2222X999十3333X3334...简算?
2222X999十3333X3334...简算?

2222X999十3333X3334...简算?
2222X999十3333X3334
=1111x2x3x333+3333x3334
=3333x666+3333x3334
=3333x(666+3334)
=3333x4000
=13332000
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2222X999十3333X3334
=2222X(1000-1)+3333X(3333+1)
=2222000-2222+1111X3(3333+1)
=2222000-2222+1111X(9999+3)
=2222000-2222+1111X(10000+2)
=2222000-2222+11110000+2222
=13332000能再问一道...

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2222X999十3333X3334
=2222X(1000-1)+3333X(3333+1)
=2222000-2222+1111X3(3333+1)
=2222000-2222+1111X(9999+3)
=2222000-2222+1111X(10000+2)
=2222000-2222+11110000+2222
=13332000

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