1. 16 + 2 = 39 14 11 18
2. 4 + 7 = 39 6 26 11
3. 12 + 10 = 15 22 1 31
4. 16 + 1 = 12 23 5 17
5. 7 - 5 = 1 2 40 4
6. 4 - 15 = 33 19 1 -11
7. 16 - 9 = 39 40 9 7
8. 19 - 19 = 0 37 33 19
9. 14 + 10 = 24 10 11 1
10. 6 - 19 = 6 35 -13 1