Correction :

14 + 16 = 30	11 × 7 = 77
23 - 17 = 6	12 - 2 = 10
32 - 10 = 22	21 + 10 = 31
27 - 13 = 14	19 + 12 = 31
24 - 0 = 24	33 - 16 = 17
27 - 11 = 16	0 + 24 = 24
1 × 5 = 5	16 + 3 = 19
4 + 18 = 22	12 + 16 = 28
1 × 4 = 4	7 + 12 = 19
4 × 3 = 12	19 + 1 = 20