I am a 3 digit number 

My ones place is one more than my hundred 
My hundreds place is 3 greater then 6 
My tens place is half of my hundred.

To find the 3-digit number that satisfies the given conditions, we can follow a step-by-step process.

1. Start by identifying the information given about the ones, tens, and hundreds places:
- The ones place is one more than the hundreds place.
- The hundreds place is 3 greater than 6.
- The tens place is half of the hundreds place.

2. Let's assign variables to represent the unknown digits:
- Let's use "A" to represent the hundreds place digit.
- Let's use "B" to represent the tens place digit.
- Let's use "C" to represent the ones place digit.

3. Now, we can apply the given information to form equations:
- The ones place (C) is one more than the hundreds place (A), so C = A + 1.
- The hundreds place (A) is 3 greater than 6, so A = 6 + 3 = 9.
- The tens place (B) is half of the hundreds place (A), so B = A/2.

4. Substitute the known value of A:
- A = 9
- B = 9/2 = 4.5

5. Since the tens place must be a whole number, we can conclude that the given conditions cannot be satisfied. The tens place cannot be equal to 4.5.

Therefore, there is no 3-digit number that satisfies the given conditions.