Correction :

3 × 1 = 3	6 + 23 = 29
2 + 20 = 22	6 + 1 = 7
32 - 20 = 12	3 × 3 = 9
18 + 0 = 18	31 - 12 = 19
7 × 4 = 28	1 × 2 = 2
7 : 1 = 7	34 - 17 = 17
38 - 18 = 20	16 - 5 = 11
11 + 1 = 12	14 + 20 = 34
8 × 8 = 64	23 - 4 = 19
26 - 15 = 11	4 : 2 = 2