πagarwalmath · 1st grade · Common Core 1.OA.D.8
❓ Missing numbers
Find the unknown in any position (8 + ? = 11)
Name: ______________________Date: ____________
19 − 1 = ? Think addition: 1 + ? = 9
Answer: ______________
23 + ? = 5
Answer: ______________
310 − ? = 9
Answer: ______________
48 + ? = 10
Answer: ______________
57 − ? = 5
Answer: ______________
63 − 1 = ? Think addition: 1 + ? = 3
Answer: ______________
71 + ? = 6
Answer: ______________
8? + 4 = 5
Answer: ______________
92 + ? = 6
Answer: ______________
10? + 6 = 7
Answer: ______________
1110 − 4 = ? Think addition: 4 + ? = 10
Answer: ______________
126 − 3 = ? Think addition: 3 + ? = 6
Answer: ______________
Answer key: Missing numbers
- 1. 8
- 2. 2
- 3. 1
- 4. 2
- 5. 2
- 6. 2
- 7. 5
- 8. 1
- 9. 4
- 10. 1
- 11. 6
- 12. 3
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/1st-grade/add-missing-number