Correction :

22 + 20 = 4224 + 17 = 41
25 - 3 = 225 × 10 = 50
34 - 12 = 225 - 4 = 1
24 + 24 = 4821 - 11 = 10
10 + 19 = 2922 + 4 = 26
14 + 12 = 2611 + 9 = 20
15 + 19 = 349 + 0 = 9
15 + 7 = 225 + 23 = 28
3 - 1 = 225 - 22 = 3
30 - 24 = 65 × 11 = 55