1: 3-3 () + 1 () - 2 () + 3 () - 1 () 2: 4-1 () + 0 () + 2 () - 1 () + 3 () 3: 2 + 3 () - 1 () - 2 () - 1 () + 3 () 4: 5-1 () - 2 () + 2 () + 1 () - 1 () Ask () what to fill in and what rules to follow

1: 3-3 () + 1 () - 2 () + 3 () - 1 () 2: 4-1 () + 0 () + 2 () - 1 () + 3 () 3: 2 + 3 () - 1 () - 2 () - 1 () + 3 () 4: 5-1 () - 2 () + 2 () + 1 () - 1 () Ask () what to fill in and what rules to follow

1: 3-3 (- 1) + 1 (2) - 2 (- 3) + 3 (1) - 1 (n + (- 1))
2: 4-1 (3) + 0 (- 2) + 2 (4) - 1 (0) + 3 ((n-3) + n)
3: 2 + 3 (4) - 1 (3) - 2 (6) - 1 (2) + 3 ((n + 5) - n)
4: 5-1 (6) - 2 (2) + 2 (3) + 1 (5) - 1 ((n-6) + n)
The results of the four questions are the same