πagarwalmath · 1st grade · Common Core 1.OA.D.8
❓ Missing numbers
Find the unknown in any position (8 + ? = 11)
Name: ______________________Date: ____________
14 + ? = 5
Answer: ______________
26 − ? = 1
Answer: ______________
33 + ? = 6
Answer: ______________
43 + ? = 5
Answer: ______________
5? + 1 = 8
Answer: ______________
64 − ? = 2
Answer: ______________
73 − 2 = ? Think addition: 2 + ? = 3
Answer: ______________
8? + 9 = 10
Answer: ______________
9? − 5 = 1
Answer: ______________
10? − 6 = 1
Answer: ______________
119 − ? = 1
Answer: ______________
1210 − 2 = ? Think addition: 2 + ? = 10
Answer: ______________
Answer key: Missing numbers
- 1. 1
- 2. 5
- 3. 3
- 4. 2
- 5. 7
- 6. 2
- 7. 1
- 8. 1
- 9. 6
- 10. 7
- 11. 8
- 12. 8
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/1st-grade/add-missing-number