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Addition investigation 6-11-15

Emperor Ellis knows

111 + 222 = 333

Would this pattern be the same for 

777 + 888 = 999?

 

If you disagree, explain what the answer would be.

Look for any patterns if you were to try 

555 + 666 =

666 + 777 =

777 + 888 =

888 + 999 =

Try the same for 4 digit numbers.

 

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