πagarwalmath · 1st grade · Common Core 1.OA.D.8
❓ Missing numbers
Find the unknown in any position (8 + ? = 11)
Name: ______________________Date: ____________
110 − 5 = ? Think addition: 5 + ? = 10
Answer: ______________
27 − 1 = ? Think addition: 1 + ? = 7
Answer: ______________
37 − ? = 1
Answer: ______________
410 − ? = 7
Answer: ______________
59 − ? = 8
Answer: ______________
610 − 1 = ? Think addition: 1 + ? = 10
Answer: ______________
7? + 5 = 6
Answer: ______________
81 + ? = 5
Answer: ______________
97 − ? = 5
Answer: ______________
1010 − 9 = ? Think addition: 9 + ? = 10
Answer: ______________
115 + ? = 7
Answer: ______________
125 − ? = 1
Answer: ______________
Answer key: Missing numbers
- 1. 5
- 2. 6
- 3. 6
- 4. 3
- 5. 1
- 6. 9
- 7. 1
- 8. 4
- 9. 2
- 10. 1
- 11. 2
- 12. 4
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/1st-grade/add-missing-number