I am a 3 digit number when i am rounded to the nearest 100 I become 800 when i am rounded to my hundreds digit does not change i have more ones than 10 I am even the sum of my digits is 20 what number am i

To find the solution, let's break down the information given:

1. When the number is rounded to the nearest 100, it becomes 800.
This means the number falls between 750 and 850.

2. When the number is rounded to its hundreds digit, the value does not change.
This means the number has to end with 00.

3. The number has more ones than tens.
This means the tens digit should be less than the units digit.

4. The sum of the digits is 20.
This gives us a clue that the digits may be 8, 6, and 6, as these add up to 20.

Considering all of these conditions, the only number that satisfies them is 866.