Correction :

2 + 11 = 13	36 - 21 = 15
22 + 12 = 34	25 - 16 = 9
6 × 3 = 18	7 - 4 = 3
0 + 6 = 6	10 + 12 = 22
23 + 11 = 34	30 - 6 = 24
20 - 16 = 4	13 - 1 = 12
44 : 4 = 11	27 - 10 = 17
15 + 10 = 25	38 - 18 = 20
16 - 15 = 1	17 - 14 = 3
10 - 5 = 5	23 - 16 = 7