πagarwalmath · 1st grade · Common Core 1.OA.D.8
❓ Missing numbers
Find the unknown in any position (8 + ? = 11)
Name: ______________________Date: ____________
16 − 2 = ? Think addition: 2 + ? = 6
Answer: ______________
21 + ? = 6
Answer: ______________
34 − 3 = ? Think addition: 3 + ? = 4
Answer: ______________
48 − ? = 5
Answer: ______________
510 − 2 = ? Think addition: 2 + ? = 10
Answer: ______________
6? + 1 = 3
Answer: ______________
7? − 6 = 3
Answer: ______________
8? − 8 = 1
Answer: ______________
9? + 2 = 4
Answer: ______________
105 − 4 = ? Think addition: 4 + ? = 5
Answer: ______________
11? − 4 = 3
Answer: ______________
12? − 3 = 2
Answer: ______________
Answer key: Missing numbers
- 1. 4
- 2. 5
- 3. 1
- 4. 3
- 5. 8
- 6. 2
- 7. 9
- 8. 9
- 9. 2
- 10. 1
- 11. 7
- 12. 5
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/1st-grade/add-missing-number