Correction :

29 - 20 = 9	2 × 7 = 14
14 + 16 = 30	16 - 1 = 15
18 - 10 = 8	24 + 17 = 41
4 : 2 = 2	17 + 1 = 18
11 × 4 = 44	4 × 2 = 8
13 + 23 = 36	10 × 10 = 100
29 - 9 = 20	8 + 17 = 25
8 × 9 = 72	16 - 5 = 11
1 - 0 = 1	14 - 0 = 14
5 + 5 = 10	14 - 7 = 7