πagarwalmath · 1st grade · Common Core 1.OA.D.8
❓ Missing numbers
Find the unknown in any position (8 + ? = 11)
Name: ______________________Date: ____________
1? − 4 = 15
Answer: ______________
26 + ? = 17
Answer: ______________
317 − 10 = ? Think addition: 10 + ? = 17
Answer: ______________
420 − 13 = ? Think addition: 13 + ? = 20
Answer: ______________
54 + ? = 11
Answer: ______________
620 − 10 = ? Think addition: 10 + ? = 20
Answer: ______________
716 − ? = 10
Answer: ______________
812 − ? = 10
Answer: ______________
915 − 12 = ? Think addition: 12 + ? = 15
Answer: ______________
1014 − ? = 10
Answer: ______________
1113 − ? = 10
Answer: ______________
12? + 11 = 13
Answer: ______________
Answer key: Missing numbers
- 1. 19
- 2. 11
- 3. 7
- 4. 7
- 5. 7
- 6. 10
- 7. 6
- 8. 2
- 9. 3
- 10. 4
- 11. 3
- 12. 2
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/1st-grade/add-missing-number