Correction :

22 - 16 = 6	1 + 11 = 12
44 - 21 = 23	22 - 16 = 6
0 + 13 = 13	4 : 2 = 2
1 - 1 = 0	20 - 13 = 7
6 × 6 = 36	14 - 10 = 4
38 - 21 = 17	16 - 1 = 15
23 - 14 = 9	35 - 11 = 24
4 + 8 = 12	30 - 10 = 20
20 + 14 = 34	21 - 12 = 9
13 - 3 = 10	17 + 2 = 19