πagarwalmath · 1st grade · Common Core 1.OA.D.8
❓ Missing numbers
Find the unknown in any position (8 + ? = 11)
Name: ______________________Date: ____________
1? − 1 = 15
Answer: ______________
2? − 13 = 4
Answer: ______________
314 − ? = 12
Answer: ______________
4? + 16 = 19
Answer: ______________
59 + ? = 19
Answer: ______________
618 − 16 = ? Think addition: 16 + ? = 18
Answer: ______________
79 + ? = 17
Answer: ______________
83 + ? = 16
Answer: ______________
913 + ? = 16
Answer: ______________
1014 − 12 = ? Think addition: 12 + ? = 14
Answer: ______________
1120 − ? = 5
Answer: ______________
1214 − ? = 3
Answer: ______________
Answer key: Missing numbers
- 1. 16
- 2. 17
- 3. 2
- 4. 3
- 5. 10
- 6. 2
- 7. 8
- 8. 13
- 9. 3
- 10. 2
- 11. 15
- 12. 11
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/1st-grade/add-missing-number