Name:_______________________
Missing Variables
Directions: Solve for the missing variable.
1. 7 + 9 = n 2. n + 10 = 21 3. 9 + h = 29
4. 5 + b = 25 5. 12 + 15 = x 6. n + 13 = 63
7. 8 + b = 48 8. p + 44 = 88 9. a + 12 = 24
10. 13 + 33 = a 11. 7 + n = 16 12. 30 + a = 61
13. 30 + c = 53 14. m + 37 = 56 15. 14 + r = 77