πagarwalmath · 1st grade · Common Core 1.OA.D.8
❓ Missing numbers
Find the unknown in any position (8 + ? = 11)
Name: ______________________Date: ____________
17 − 3 = ? Think addition: 3 + ? = 7
Answer: ______________
26 − 1 = ? Think addition: 1 + ? = 6
Answer: ______________
34 − 1 = ? Think addition: 1 + ? = 4
Answer: ______________
41 + ? = 9
Answer: ______________
56 − 2 = ? Think addition: 2 + ? = 6
Answer: ______________
66 − ? = 3
Answer: ______________
7? + 2 = 3
Answer: ______________
86 + ? = 7
Answer: ______________
98 − 1 = ? Think addition: 1 + ? = 8
Answer: ______________
103 − ? = 1
Answer: ______________
117 − ? = 4
Answer: ______________
1210 − ? = 1
Answer: ______________
Answer key: Missing numbers
- 1. 4
- 2. 5
- 3. 3
- 4. 8
- 5. 4
- 6. 3
- 7. 1
- 8. 1
- 9. 7
- 10. 2
- 11. 3
- 12. 9
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/1st-grade/add-missing-number