πagarwalmath · 1st grade · Common Core 1.OA.D.8
❓ Missing numbers
Find the unknown in any position (8 + ? = 11)
Name: ______________________Date: ____________
118 − 12 = ? Think addition: 12 + ? = 18
Answer: ______________
2? − 3 = 10
Answer: ______________
313 − 3 = ? Think addition: 3 + ? = 13
Answer: ______________
415 − ? = 12
Answer: ______________
57 + ? = 11
Answer: ______________
68 + ? = 20
Answer: ______________
712 − ? = 1
Answer: ______________
811 − 6 = ? Think addition: 6 + ? = 11
Answer: ______________
911 − ? = 3
Answer: ______________
1020 − ? = 11
Answer: ______________
1111 − 5 = ? Think addition: 5 + ? = 11
Answer: ______________
1210 + ? = 19
Answer: ______________
Answer key: Missing numbers
- 1. 6
- 2. 13
- 3. 10
- 4. 3
- 5. 4
- 6. 12
- 7. 11
- 8. 5
- 9. 8
- 10. 9
- 11. 6
- 12. 9
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/1st-grade/add-missing-number