Let's evaluate each statement to determine which one is NOT true:
- 10 + 9 = 19 (True)
- 7 + 1210 = 1217 (False, this is incorrect)
- 10 - 4 = 6 (True)
- 3 + 3 = 6 (True)
- 10 = 19 - 11 (True, because 19 - 11 = 8)
The statement that is NOT true is 7 + 1210 = 1217.