πagarwalmath · 1st grade · Common Core 1.OA.D.8
❓ Missing numbers
Find the unknown in any position (8 + ? = 11)
Name: ______________________Date: ____________
1? − 4 = 6
Answer: ______________
21 + ? = 7
Answer: ______________
34 − 1 = ? Think addition: 1 + ? = 4
Answer: ______________
43 − 1 = ? Think addition: 1 + ? = 3
Answer: ______________
5? + 1 = 5
Answer: ______________
6? + 8 = 9
Answer: ______________
74 − ? = 2
Answer: ______________
88 − ? = 4
Answer: ______________
910 − ? = 1
Answer: ______________
10? + 2 = 7
Answer: ______________
117 − 5 = ? Think addition: 5 + ? = 7
Answer: ______________
129 − ? = 1
Answer: ______________
Answer key: Missing numbers
- 1. 10
- 2. 6
- 3. 3
- 4. 2
- 5. 4
- 6. 1
- 7. 2
- 8. 4
- 9. 9
- 10. 5
- 11. 2
- 12. 8
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/1st-grade/add-missing-number