πagarwalmath · 1st grade · Common Core 1.OA.D.8
❓ Missing numbers
Find the unknown in any position (8 + ? = 11)
Name: ______________________Date: ____________
1? − 8 = 2
Answer: ______________
24 − 1 = ? Think addition: 1 + ? = 4
Answer: ______________
34 − ? = 2
Answer: ______________
43 − ? = 2
Answer: ______________
5? + 1 = 3
Answer: ______________
63 + ? = 5
Answer: ______________
710 − 9 = ? Think addition: 9 + ? = 10
Answer: ______________
84 − ? = 3
Answer: ______________
9? + 4 = 9
Answer: ______________
10? + 4 = 6
Answer: ______________
115 − 4 = ? Think addition: 4 + ? = 5
Answer: ______________
123 + ? = 7
Answer: ______________
Answer key: Missing numbers
- 1. 10
- 2. 3
- 3. 2
- 4. 1
- 5. 2
- 6. 2
- 7. 1
- 8. 1
- 9. 5
- 10. 2
- 11. 1
- 12. 4
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/1st-grade/add-missing-number