Correction :

1 + 9 = 10	17 - 6 = 11
20 + 14 = 34	24 - 5 = 19
15 + 2 = 17	22 + 7 = 29
22 - 10 = 12	13 + 13 = 26
29 - 13 = 16	21 - 6 = 15
17 + 4 = 21	19 + 6 = 25
10 + 1 = 11	46 - 24 = 22
23 - 3 = 20	9 - 9 = 0
7 × 8 = 56	12 + 4 = 16
22 - 12 = 10	0 + 24 = 24