πagarwalmath · 1st grade · Common Core 1.OA.D.8
❓ Missing numbers
Find the unknown in any position (8 + ? = 11)
Name: ______________________Date: ____________
1? − 1 = 4
Answer: ______________
27 + ? = 10
Answer: ______________
3? + 2 = 4
Answer: ______________
41 + ? = 3
Answer: ______________
510 − 4 = ? Think addition: 4 + ? = 10
Answer: ______________
66 − 4 = ? Think addition: 4 + ? = 6
Answer: ______________
76 + ? = 8
Answer: ______________
810 − 3 = ? Think addition: 3 + ? = 10
Answer: ______________
9? + 7 = 10
Answer: ______________
10? + 1 = 3
Answer: ______________
11? − 3 = 7
Answer: ______________
12? + 5 = 6
Answer: ______________
Answer key: Missing numbers
- 1. 5
- 2. 3
- 3. 2
- 4. 2
- 5. 6
- 6. 2
- 7. 2
- 8. 7
- 9. 3
- 10. 2
- 11. 10
- 12. 1
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/1st-grade/add-missing-number