πagarwalmath · 1st grade · Common Core 1.OA.D.8
❓ Missing numbers
Find the unknown in any position (8 + ? = 11)
Name: ______________________Date: ____________
15 − 2 = ? Think addition: 2 + ? = 5
Answer: ______________
2? + 4 = 9
Answer: ______________
32 + ? = 4
Answer: ______________
42 + ? = 10
Answer: ______________
55 − ? = 1
Answer: ______________
64 − ? = 2
Answer: ______________
74 + ? = 10
Answer: ______________
87 − ? = 2
Answer: ______________
910 − 2 = ? Think addition: 2 + ? = 10
Answer: ______________
104 + ? = 9
Answer: ______________
11? + 2 = 8
Answer: ______________
128 − 6 = ? Think addition: 6 + ? = 8
Answer: ______________
Answer key: Missing numbers
- 1. 3
- 2. 5
- 3. 2
- 4. 8
- 5. 4
- 6. 2
- 7. 6
- 8. 5
- 9. 8
- 10. 5
- 11. 6
- 12. 2
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/1st-grade/add-missing-number