To help you with the problem, I need to know the specific scores for John (J) and Kamira (K) after round one. You mentioned a number line that ranges from -10 to 10, but without knowing the exact positions of J and K on that number line, I can't calculate the sum, difference, or absolute values.
If you provide the scores for John and Kamira (for example, "John's score is 3 and Kamira's score is -2"), I can complete the statements for you.