Correction :

10 × 6 = 60	4 + 19 = 23
34 - 20 = 14	3 + 10 = 13
12 + 21 = 33	9 + 9 = 18
2 + 15 = 17	16 + 14 = 30
16 + 13 = 29	10 + 14 = 24
24 - 11 = 13	22 - 10 = 12
33 - 23 = 10	23 - 13 = 10
1 + 11 = 12	21 - 5 = 16
14 + 16 = 30	28 - 7 = 21
1 × 3 = 3	18 + 18 = 36