πagarwalmath · 1st grade · Common Core 1.OA.D.8
❓ Missing numbers
Find the unknown in any position (8 + ? = 11)
Name: ______________________Date: ____________
1? + 3 = 6
Answer: ______________
23 − 1 = ? Think addition: 1 + ? = 3
Answer: ______________
3? − 4 = 3
Answer: ______________
4? + 2 = 8
Answer: ______________
57 − ? = 4
Answer: ______________
6? + 1 = 7
Answer: ______________
75 + ? = 10
Answer: ______________
83 − ? = 2
Answer: ______________
9? + 2 = 4
Answer: ______________
105 − 1 = ? Think addition: 1 + ? = 5
Answer: ______________
11? − 1 = 2
Answer: ______________
126 − ? = 5
Answer: ______________
Answer key: Missing numbers
- 1. 3
- 2. 2
- 3. 7
- 4. 6
- 5. 3
- 6. 6
- 7. 5
- 8. 1
- 9. 2
- 10. 4
- 11. 3
- 12. 1
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/1st-grade/add-missing-number