Correction :

9 + 16 = 25	25 - 15 = 10
37 - 24 = 13	30 - 23 = 7
19 + 0 = 19	18 + 20 = 38
24 + 10 = 34	20 - 20 = 0
3 + 0 = 3	19 + 15 = 34
14 + 24 = 38	18 - 13 = 5
5 : 5 = 1	25 - 13 = 12
10 + 19 = 29	26 - 21 = 5
21 - 2 = 19	23 + 16 = 39
6 : 3 = 2	31 - 23 = 8