Correction :

8 × 9 = 72	28 - 15 = 13
25 - 3 = 22	10 + 2 = 12
6 + 8 = 14	11 : 11 = 1
9 + 13 = 22	3 + 19 = 22
0 + 23 = 23	8 + 19 = 27
43 - 23 = 20	30 - 20 = 10
11 + 14 = 25	30 - 18 = 12
21 + 8 = 29	22 + 3 = 25
25 - 22 = 3	4 + 16 = 20
37 - 14 = 23	18 + 0 = 18