(1)15 + 2 =
(2)6 + 13 =
(3)12 - 6 =
(4)14 - 6 =
(5)19 - 12 =
(6)12 + 4 =
(7)10 + 5 =
(8)9 - 2 =
(9)16 - 12 =
(2)6 + 13 =
(3)12 - 6 =
(4)14 - 6 =
(5)19 - 12 =
(6)12 + 4 =
(7)10 + 5 =
(8)9 - 2 =
(9)16 - 12 =