Add using number line:
(1) 5 and 3
(2) 6 and 2
(3) (ā3) and (+5)
(4) 8 and (ā12)
(5) (ā7) and 5
(6) 10 and (ā14)
(7) (ā5) and (ā2)
(8) (+6) and (ā9)
(9) (ā4) and (ā1)
(10) 1 and (ā5)