Missing Addend Addition Worksheets — Grade 2
Missing-addend problems ask children to find the number that completes an addition sentence, like 6 + ___ = 10. These free Grade 2 worksheets build powerful number sense and quietly introduce the idea behind subtraction and early algebra.
Create your Addition worksheet
Choose the options below and click 🔄 Regenerate for a brand-new set of problems — as many fresh worksheets as you like, no page reload. Then download the PDF or print it — with an answer key included.
Solving for the missing number encourages children to think about the relationship between parts and wholes, not just to compute. Generate unlimited problems, download the PDF with answer key, and print for engaging practice.
Example missing addend addition problems
Here are a few sample problems like the ones this worksheet generates (with answers). Click Regenerate above for a brand-new set every time.
- 65 + ___ = 101 (___ = 36)
- 13 + ___ = 93 (___ = 80)
- 61 + ___ = 131 (___ = 70)
- 45 + ___ = 55 (___ = 10)
- 77 + ___ = 165 (___ = 88)
- 79 + ___ = 143 (___ = 64)
- 19 + ___ = 117 (___ = 98)
- 87 + ___ = 147 (___ = 60)
- 15 + ___ = 45 (___ = 30)
- 35 + ___ = 59 (___ = 24)
How to use these worksheets
- Problems are set to "Find the missing number" — click Regenerate for more.
- Ask: what do I add to the first number to reach the total?
- Encourage counting up or using known facts.
- Download and print the PDF with its answer key.
Frequently asked questions
What is a missing addend?
A missing addend is the unknown number in an addition sentence, such as the blank in 4 + ___ = 9.
Why practise missing addends?
It builds number sense and lays the groundwork for subtraction and simple algebra.
Are they free to print?
Yes — free, unlimited and no sign-up needed.