Correction :

5 × 7 = 35	20 + 16 = 36
28 - 11 = 17	10 - 3 = 7
34 - 10 = 24	1 + 14 = 15
7 × 3 = 21	2 - 2 = 0
2 + 19 = 21	25 - 24 = 1
25 - 19 = 6	4 × 9 = 36
35 - 18 = 17	21 - 4 = 17
7 × 2 = 14	22 + 16 = 38
4 × 3 = 12	22 + 12 = 34
3 + 1 = 4	15 - 9 = 6