πagarwalmath · 1st grade · Common Core 1.OA.D.8
❓ Missing numbers
Find the unknown in any position (8 + ? = 11)
Name: ______________________Date: ____________
110 + ? = 12
Answer: ______________
2? − 17 = 3
Answer: ______________
3? − 11 = 2
Answer: ______________
48 + ? = 11
Answer: ______________
51 + ? = 12
Answer: ______________
611 − 9 = ? Think addition: 9 + ? = 11
Answer: ______________
713 − 7 = ? Think addition: 7 + ? = 13
Answer: ______________
811 − 6 = ? Think addition: 6 + ? = 11
Answer: ______________
920 − ? = 5
Answer: ______________
10? + 13 = 14
Answer: ______________
11? − 5 = 12
Answer: ______________
12? + 15 = 18
Answer: ______________
Answer key: Missing numbers
- 1. 2
- 2. 20
- 3. 13
- 4. 3
- 5. 11
- 6. 2
- 7. 6
- 8. 5
- 9. 15
- 10. 1
- 11. 17
- 12. 3
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/1st-grade/add-missing-number