πagarwalmath · 1st grade · Common Core 1.OA.D.8
❓ Missing numbers
Find the unknown in any position (8 + ? = 11)
Name: ______________________Date: ____________
12 + ? = 7
Answer: ______________
210 − 1 = ? Think addition: 1 + ? = 10
Answer: ______________
36 − 4 = ? Think addition: 4 + ? = 6
Answer: ______________
44 − 1 = ? Think addition: 1 + ? = 4
Answer: ______________
57 − 1 = ? Think addition: 1 + ? = 7
Answer: ______________
6? − 8 = 1
Answer: ______________
79 − 5 = ? Think addition: 5 + ? = 9
Answer: ______________
8? − 6 = 3
Answer: ______________
96 − ? = 3
Answer: ______________
10? − 2 = 3
Answer: ______________
113 − ? = 2
Answer: ______________
128 − ? = 1
Answer: ______________
Answer key: Missing numbers
- 1. 5
- 2. 9
- 3. 2
- 4. 3
- 5. 6
- 6. 9
- 7. 4
- 8. 9
- 9. 3
- 10. 5
- 11. 1
- 12. 7
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/1st-grade/add-missing-number