Correction :

10 + 19 = 29	19 - 8 = 11
6 + 7 = 13	6 × 11 = 66
20 - 10 = 10	56 : 8 = 7
22 - 6 = 16	5 + 21 = 26
11 × 8 = 88	5 + 18 = 23
6 + 19 = 25	34 - 15 = 19
0 + 7 = 7	9 + 5 = 14
22 + 16 = 38	9 + 15 = 24
20 + 4 = 24	10 + 17 = 27
16 + 9 = 25	21 + 23 = 44