Correction :

56 : 8 = 7	60 : 6 = 10
4 + 10 = 14	8 + 5 = 13
1 × 5 = 5	25 - 10 = 15
12 - 1 = 11	20 + 11 = 31
20 + 6 = 26	11 - 2 = 9
17 + 22 = 39	4 + 14 = 18
21 : 3 = 7	4 - 3 = 1
6 × 11 = 66	8 + 11 = 19
10 + 24 = 34	21 - 9 = 12
3 + 10 = 13	15 : 5 = 3