πagarwalmath · 1st grade · Common Core 1.OA.D.8
❓ Missing numbers
Find the unknown in any position (8 + ? = 11)
Name: ______________________Date: ____________
18 − 3 = ? Think addition: 3 + ? = 8
Answer: ______________
26 − ? = 3
Answer: ______________
3? − 1 = 2
Answer: ______________
49 − 2 = ? Think addition: 2 + ? = 9
Answer: ______________
54 + ? = 6
Answer: ______________
63 − 2 = ? Think addition: 2 + ? = 3
Answer: ______________
7? + 2 = 3
Answer: ______________
84 + ? = 5
Answer: ______________
9? + 5 = 6
Answer: ______________
108 − ? = 6
Answer: ______________
117 − ? = 5
Answer: ______________
1210 − ? = 3
Answer: ______________
Answer key: Missing numbers
- 1. 5
- 2. 3
- 3. 3
- 4. 7
- 5. 2
- 6. 1
- 7. 1
- 8. 1
- 9. 1
- 10. 2
- 11. 2
- 12. 7
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/1st-grade/add-missing-number