πagarwalmath · 1st grade · Common Core 1.OA.D.8
❓ Missing numbers
Find the unknown in any position (8 + ? = 11)
Name: ______________________Date: ____________
17 − 1 = ? Think addition: 1 + ? = 7
Answer: ______________
210 − 2 = ? Think addition: 2 + ? = 10
Answer: ______________
34 − ? = 3
Answer: ______________
43 − ? = 2
Answer: ______________
59 − 7 = ? Think addition: 7 + ? = 9
Answer: ______________
6? − 3 = 7
Answer: ______________
7? − 2 = 7
Answer: ______________
86 − 5 = ? Think addition: 5 + ? = 6
Answer: ______________
910 − 6 = ? Think addition: 6 + ? = 10
Answer: ______________
103 − 1 = ? Think addition: 1 + ? = 3
Answer: ______________
11? + 1 = 9
Answer: ______________
12? − 3 = 3
Answer: ______________
Answer key: Missing numbers
- 1. 6
- 2. 8
- 3. 1
- 4. 1
- 5. 2
- 6. 10
- 7. 9
- 8. 1
- 9. 4
- 10. 2
- 11. 8
- 12. 6
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/1st-grade/add-missing-number