Correction :

19 + 17 = 3622 + 8 = 30
1 × 1 = 121 + 16 = 37
21 + 3 = 2427 - 18 = 9
19 + 5 = 2420 : 2 = 10
15 + 17 = 328 × 2 = 16
10 + 20 = 308 + 6 = 14
17 - 3 = 1434 - 23 = 11
3 × 11 = 3336 : 6 = 6
22 + 14 = 3617 + 12 = 29
4 × 8 = 324 + 13 = 17