πagarwalmath · 1st grade · Common Core 1.OA.D.8
❓ Missing numbers
Find the unknown in any position (8 + ? = 11)
Name: ______________________Date: ____________
14 − 1 = ? Think addition: 1 + ? = 4
Answer: ______________
27 + ? = 8
Answer: ______________
310 − 6 = ? Think addition: 6 + ? = 10
Answer: ______________
4? − 8 = 1
Answer: ______________
51 + ? = 3
Answer: ______________
64 − 3 = ? Think addition: 3 + ? = 4
Answer: ______________
7? + 1 = 3
Answer: ______________
89 − 8 = ? Think addition: 8 + ? = 9
Answer: ______________
9? − 1 = 3
Answer: ______________
1010 − 3 = ? Think addition: 3 + ? = 10
Answer: ______________
11? + 4 = 9
Answer: ______________
124 − ? = 3
Answer: ______________
Answer key: Missing numbers
- 1. 3
- 2. 1
- 3. 4
- 4. 9
- 5. 2
- 6. 1
- 7. 2
- 8. 1
- 9. 4
- 10. 7
- 11. 5
- 12. 1
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/1st-grade/add-missing-number