Finding the Unknown Number
Name: _______________________________
Date: _______________________________
Instructions: Find the missing number in each equation. Write your answer on the line.
1. 3 + _______ = 7
2. 5 + _______ = 9
3. _______ + 4 = 10
4. 2 + _______ = 8
5. _______ + 6 = 11
6. 7 + _______ = 12
7. 8 - _______ = 5
8. 10 - _______ = 4
9. _______ - 3 = 6
10. 12 - _______ = 7
11. _______ - 2 = 5
12. 9 - _______ = 3
13. 4 + _______ = 11
14. _______ + 5 = 13
15. 11 - _______ = 6
16. _______ - 4 = 8
Challenge Problems! 🌟
17. 6 + _______ = 15
18. _______ - 5 = 10
19. 14 - _______ = 8
20. _______ + 7 = 16