Correction :

11 × 7 = 77	1 + 14 = 15
17 + 16 = 33	2 + 20 = 22
16 + 4 = 20	24 + 13 = 37
12 + 5 = 17	19 + 13 = 32
7 - 5 = 2	33 - 16 = 17
29 - 12 = 17	12 - 6 = 6
21 - 4 = 17	22 - 8 = 14
9 × 3 = 27	13 + 0 = 13
1 × 3 = 3	19 - 7 = 12
4 × 10 = 40	32 - 10 = 22