πagarwalmath · 1st grade · Common Core 1.OA.D.8
❓ Missing numbers
Find the unknown in any position (8 + ? = 11)
Name: ______________________Date: ____________
12 + ? = 5
Answer: ______________
21 + ? = 5
Answer: ______________
33 + ? = 4
Answer: ______________
43 − 1 = ? Think addition: 1 + ? = 3
Answer: ______________
5? − 3 = 5
Answer: ______________
61 + ? = 3
Answer: ______________
72 + ? = 7
Answer: ______________
85 − 1 = ? Think addition: 1 + ? = 5
Answer: ______________
9? + 5 = 8
Answer: ______________
10? − 2 = 1
Answer: ______________
114 − ? = 3
Answer: ______________
128 − ? = 4
Answer: ______________
Answer key: Missing numbers
- 1. 3
- 2. 4
- 3. 1
- 4. 2
- 5. 8
- 6. 2
- 7. 5
- 8. 4
- 9. 3
- 10. 3
- 11. 1
- 12. 4
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/1st-grade/add-missing-number