πagarwalmath · 1st grade · Common Core 1.OA.D.8
❓ Missing numbers
Find the unknown in any position (8 + ? = 11)
Name: ______________________Date: ____________
1? − 7 = 3
Answer: ______________
210 − 5 = ? Think addition: 5 + ? = 10
Answer: ______________
36 − ? = 3
Answer: ______________
49 − 8 = ? Think addition: 8 + ? = 9
Answer: ______________
5? − 1 = 3
Answer: ______________
65 − 2 = ? Think addition: 2 + ? = 5
Answer: ______________
7? − 2 = 4
Answer: ______________
8? − 2 = 1
Answer: ______________
910 − 6 = ? Think addition: 6 + ? = 10
Answer: ______________
10? − 3 = 1
Answer: ______________
113 − ? = 1
Answer: ______________
12? − 5 = 1
Answer: ______________
Answer key: Missing numbers
- 1. 10
- 2. 5
- 3. 3
- 4. 1
- 5. 4
- 6. 3
- 7. 6
- 8. 3
- 9. 4
- 10. 4
- 11. 2
- 12. 6
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/1st-grade/add-missing-number