πagarwalmath · 1st grade · Common Core 1.OA.D.8
❓ Missing numbers
Find the unknown in any position (8 + ? = 11)
Name: ______________________Date: ____________
110 − 9 = ? Think addition: 9 + ? = 10
Answer: ______________
22 + ? = 7
Answer: ______________
3? + 4 = 8
Answer: ______________
4? + 3 = 4
Answer: ______________
5? + 7 = 9
Answer: ______________
69 − ? = 4
Answer: ______________
73 − 1 = ? Think addition: 1 + ? = 3
Answer: ______________
810 − ? = 3
Answer: ______________
94 − 3 = ? Think addition: 3 + ? = 4
Answer: ______________
10? − 5 = 1
Answer: ______________
118 − 1 = ? Think addition: 1 + ? = 8
Answer: ______________
125 − 3 = ? Think addition: 3 + ? = 5
Answer: ______________
Answer key: Missing numbers
- 1. 1
- 2. 5
- 3. 4
- 4. 1
- 5. 2
- 6. 5
- 7. 2
- 8. 7
- 9. 1
- 10. 6
- 11. 7
- 12. 2
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/1st-grade/add-missing-number