Correction :

29 - 13 = 16	11 × 8 = 88
4 × 1 = 4	10 - 10 = 0
9 + 14 = 23	18 + 16 = 34
10 + 23 = 33	23 - 17 = 6
10 - 4 = 6	18 : 9 = 2
19 + 16 = 35	20 + 9 = 29
12 + 21 = 33	13 + 17 = 30
22 + 3 = 25	4 + 1 = 5
4 + 18 = 22	23 + 18 = 41
12 + 19 = 31	0 + 21 = 21