πagarwalmath · 1st grade · Common Core 1.OA.D.8
❓ Missing numbers
Find the unknown in any position (8 + ? = 11)
Name: ______________________Date: ____________
1? − 3 = 1
Answer: ______________
23 − 2 = ? Think addition: 2 + ? = 3
Answer: ______________
33 − ? = 1
Answer: ______________
410 − ? = 4
Answer: ______________
52 + ? = 8
Answer: ______________
68 − 3 = ? Think addition: 3 + ? = 8
Answer: ______________
77 − 2 = ? Think addition: 2 + ? = 7
Answer: ______________
8? − 1 = 2
Answer: ______________
9? − 2 = 1
Answer: ______________
103 + ? = 4
Answer: ______________
116 − ? = 1
Answer: ______________
125 − ? = 3
Answer: ______________
Answer key: Missing numbers
- 1. 4
- 2. 1
- 3. 2
- 4. 6
- 5. 6
- 6. 5
- 7. 5
- 8. 3
- 9. 3
- 10. 1
- 11. 5
- 12. 2
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/1st-grade/add-missing-number