πagarwalmath · 1st grade · Common Core 1.OA.D.8
❓ Missing numbers
Find the unknown in any position (8 + ? = 11)
Name: ______________________Date: ____________
1? + 2 = 5
Answer: ______________
27 − 3 = ? Think addition: 3 + ? = 7
Answer: ______________
3? + 7 = 8
Answer: ______________
4? − 4 = 3
Answer: ______________
58 − 3 = ? Think addition: 3 + ? = 8
Answer: ______________
6? − 2 = 5
Answer: ______________
79 − ? = 7
Answer: ______________
82 + ? = 5
Answer: ______________
910 − 9 = ? Think addition: 9 + ? = 10
Answer: ______________
10? − 1 = 7
Answer: ______________
11? + 1 = 3
Answer: ______________
12? + 6 = 7
Answer: ______________
Answer key: Missing numbers
- 1. 3
- 2. 4
- 3. 1
- 4. 7
- 5. 5
- 6. 7
- 7. 2
- 8. 3
- 9. 1
- 10. 8
- 11. 2
- 12. 1
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/1st-grade/add-missing-number