πagarwalmath · 1st grade · Common Core 1.OA.D.8
❓ Missing numbers
Find the unknown in any position (8 + ? = 11)
Name: ______________________Date: ____________
12 + ? = 4
Answer: ______________
21 + ? = 5
Answer: ______________
33 + ? = 7
Answer: ______________
42 + ? = 8
Answer: ______________
55 + ? = 6
Answer: ______________
61 + ? = 7
Answer: ______________
78 + ? = 10
Answer: ______________
82 + ? = 3
Answer: ______________
94 + ? = 5
Answer: ______________
107 + ? = 9
Answer: ______________
113 + ? = 6
Answer: ______________
129 + ? = 10
Answer: ______________
Answer key: Missing numbers
- 1. 2
- 2. 4
- 3. 4
- 4. 6
- 5. 1
- 6. 6
- 7. 2
- 8. 1
- 9. 1
- 10. 2
- 11. 3
- 12. 1
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/1st-grade/add-missing-number