Correction :

17 + 22 = 39	30 - 24 = 6
6 + 11 = 17	18 + 23 = 41
24 + 19 = 43	6 + 12 = 18
2 + 4 = 6	6 + 14 = 20
32 - 23 = 9	27 - 3 = 24
17 - 5 = 12	43 - 20 = 23
18 + 8 = 26	18 : 2 = 9
32 - 22 = 10	18 + 23 = 41
5 + 19 = 24	24 + 7 = 31
4 × 11 = 44	5 + 17 = 22