πagarwalmath · 1st grade · Common Core 1.OA.D.8
❓ Missing numbers
Find the unknown in any position (8 + ? = 11)
Name: ______________________Date: ____________
1? − 2 = 1
Answer: ______________
210 − 2 = ? Think addition: 2 + ? = 10
Answer: ______________
3? + 2 = 5
Answer: ______________
4? − 1 = 2
Answer: ______________
56 − 3 = ? Think addition: 3 + ? = 6
Answer: ______________
610 − 5 = ? Think addition: 5 + ? = 10
Answer: ______________
73 − 2 = ? Think addition: 2 + ? = 3
Answer: ______________
85 − 1 = ? Think addition: 1 + ? = 5
Answer: ______________
910 − ? = 4
Answer: ______________
102 + ? = 3
Answer: ______________
114 − 2 = ? Think addition: 2 + ? = 4
Answer: ______________
124 + ? = 5
Answer: ______________
Answer key: Missing numbers
- 1. 3
- 2. 8
- 3. 3
- 4. 3
- 5. 3
- 6. 5
- 7. 1
- 8. 4
- 9. 6
- 10. 1
- 11. 2
- 12. 1
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/1st-grade/add-missing-number