πagarwalmath · 1st grade · Common Core 1.OA.D.8
❓ Missing numbers
Find the unknown in any position (8 + ? = 11)
Name: ______________________Date: ____________
1? + 8 = 9
Answer: ______________
23 − 1 = ? Think addition: 1 + ? = 3
Answer: ______________
34 − ? = 3
Answer: ______________
48 − 7 = ? Think addition: 7 + ? = 8
Answer: ______________
51 + ? = 4
Answer: ______________
62 + ? = 6
Answer: ______________
77 − 5 = ? Think addition: 5 + ? = 7
Answer: ______________
81 + ? = 7
Answer: ______________
93 + ? = 5
Answer: ______________
102 + ? = 7
Answer: ______________
11? − 2 = 1
Answer: ______________
123 + ? = 4
Answer: ______________
Answer key: Missing numbers
- 1. 1
- 2. 2
- 3. 1
- 4. 1
- 5. 3
- 6. 4
- 7. 2
- 8. 6
- 9. 2
- 10. 5
- 11. 3
- 12. 1
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/1st-grade/add-missing-number