1. 18 - 14 = 21 4 15 25
2. 10 + 12 = 22 35 5 23
3. 8 - 11 = 10 -3 21 11
4. 12 + 16 = 12 25 1 28
5. 3 - 15 = -12 26 12 25
6. 18 + 4 = 18 22 38 37
7. 15 - 6 = 19 9 6 20
8. 6 - 11 = -5 22 40 24
9. 5 + 5 = 28 10 20 13
10. 3 - 11 = -8 21 9 18