Correction :

24 - 15 = 9	1 × 10 = 10
23 - 16 = 7	4 + 6 = 10
4 × 11 = 44	13 - 7 = 6
18 + 7 = 25	12 + 11 = 23
32 - 22 = 10	21 - 2 = 19
22 + 8 = 30	22 + 15 = 37
55 : 11 = 5	22 - 12 = 10
6 + 3 = 9	15 - 5 = 10
20 : 5 = 4	15 - 13 = 2
15 - 8 = 7	16 - 8 = 8