πagarwalmath · 1st grade · Common Core 1.OA.D.8
❓ Missing numbers
Find the unknown in any position (8 + ? = 11)
Name: ______________________Date: ____________
15 − 3 = ? Think addition: 3 + ? = 5
Answer: ______________
28 − 2 = ? Think addition: 2 + ? = 8
Answer: ______________
38 − 1 = ? Think addition: 1 + ? = 8
Answer: ______________
49 − 1 = ? Think addition: 1 + ? = 9
Answer: ______________
52 + ? = 4
Answer: ______________
68 − 3 = ? Think addition: 3 + ? = 8
Answer: ______________
77 − ? = 2
Answer: ______________
8? − 1 = 2
Answer: ______________
9? − 2 = 6
Answer: ______________
104 + ? = 10
Answer: ______________
1110 − 8 = ? Think addition: 8 + ? = 10
Answer: ______________
12? − 4 = 2
Answer: ______________
Answer key: Missing numbers
- 1. 2
- 2. 6
- 3. 7
- 4. 8
- 5. 2
- 6. 5
- 7. 5
- 8. 3
- 9. 8
- 10. 6
- 11. 2
- 12. 6
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/1st-grade/add-missing-number