πagarwalmath · 1st grade · Common Core 1.OA.D.8
❓ Missing numbers
Find the unknown in any position (8 + ? = 11)
Name: ______________________Date: ____________
13 − ? = 2
Answer: ______________
2? − 8 = 2
Answer: ______________
37 − 3 = ? Think addition: 3 + ? = 7
Answer: ______________
43 − 1 = ? Think addition: 1 + ? = 3
Answer: ______________
58 − 3 = ? Think addition: 3 + ? = 8
Answer: ______________
6? + 5 = 7
Answer: ______________
77 − 6 = ? Think addition: 6 + ? = 7
Answer: ______________
8? − 6 = 1
Answer: ______________
910 − 4 = ? Think addition: 4 + ? = 10
Answer: ______________
107 − ? = 2
Answer: ______________
119 − ? = 8
Answer: ______________
12? − 4 = 2
Answer: ______________
Answer key: Missing numbers
- 1. 1
- 2. 10
- 3. 4
- 4. 2
- 5. 5
- 6. 2
- 7. 1
- 8. 7
- 9. 6
- 10. 5
- 11. 1
- 12. 6
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/1st-grade/add-missing-number