(1)3 - 2 = (2)10 - 10 = (3)18 - 8 = (4)13 - 3 = (5)12 - 11 = (6)12 - 12 = (7)6 - 3 = (8)6 - 4 = (9)11 - 2 = (10)8 - 3 = (11)13 - 3 = (12)1 - 1 = (13)15 - 3 = (14)10 - 9 = (15)3 - 3 =
