Correction :

32 - 16 = 16	35 - 23 = 12
11 + 7 = 18	16 + 24 = 40
16 + 1 = 17	12 - 1 = 11
22 - 11 = 11	22 - 3 = 19
9 - 8 = 1	20 - 13 = 7
11 - 8 = 3	36 - 13 = 23
19 - 19 = 0	2 + 6 = 8
14 - 11 = 3	27 - 9 = 18
19 + 10 = 29	27 - 21 = 6
22 - 21 = 1	5 - 4 = 1