Correction :

19 + 6 = 25	23 + 13 = 36
22 - 3 = 19	10 + 7 = 17
41 - 17 = 24	8 + 23 = 31
4 : 1 = 4	7 + 15 = 22
15 + 8 = 23	2 × 1 = 2
0 + 2 = 2	10 + 0 = 10
30 - 6 = 24	32 - 15 = 17
44 - 24 = 20	23 + 15 = 38
10 + 12 = 22	19 - 15 = 4
7 + 5 = 12	21 + 14 = 35