πagarwalmath · 1st grade · Common Core 1.OA.D.8
❓ Missing numbers
Find the unknown in any position (8 + ? = 11)
Name: ______________________Date: ____________
18 − 7 = ? Think addition: 7 + ? = 8
Answer: ______________
2? − 5 = 4
Answer: ______________
3? − 1 = 5
Answer: ______________
42 + ? = 3
Answer: ______________
52 + ? = 6
Answer: ______________
66 − 2 = ? Think addition: 2 + ? = 6
Answer: ______________
77 − 6 = ? Think addition: 6 + ? = 7
Answer: ______________
88 − ? = 7
Answer: ______________
92 + ? = 4
Answer: ______________
10? − 2 = 5
Answer: ______________
11? − 4 = 5
Answer: ______________
121 + ? = 4
Answer: ______________
Answer key: Missing numbers
- 1. 1
- 2. 9
- 3. 6
- 4. 1
- 5. 4
- 6. 4
- 7. 1
- 8. 1
- 9. 2
- 10. 7
- 11. 9
- 12. 3
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/1st-grade/add-missing-number