πagarwalmath · 1st grade · Common Core 1.OA.D.8
❓ Missing numbers
Find the unknown in any position (8 + ? = 11)
Name: ______________________Date: ____________
1? + 14 = 16
Answer: ______________
220 − 17 = ? Think addition: 17 + ? = 20
Answer: ______________
311 + ? = 12
Answer: ______________
413 − ? = 8
Answer: ______________
511 − ? = 3
Answer: ______________
63 + ? = 19
Answer: ______________
72 = ? − 14
Answer: ______________
811 − 6 = ? Think addition: 6 + ? = 11
Answer: ______________
920 − 15 = ? Think addition: 15 + ? = 20
Answer: ______________
1014 = ? − 3
Answer: ______________
1117 − 1 = ? Think addition: 1 + ? = 17
Answer: ______________
12? − 11 = 9
Answer: ______________
Answer key: Missing numbers
- 1. 2
- 2. 3
- 3. 1
- 4. 5
- 5. 8
- 6. 16
- 7. 16
- 8. 5
- 9. 5
- 10. 17
- 11. 16
- 12. 20
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/1st-grade/add-missing-number