Find the missing addend within 10
Grade 1 math worksheet — 12 problems. Answer key included. First graders find the missing addend that completes a sum within 10, working with small numbers they can hold in their heads or count on their fingers. Quantities stay small so a small group can focus on the strategy instead of the counting. The set ends with two friends to judge and a say-it-out-loud explanation.
12 problems
One-time purchase · yours to keep · answer key included
$0.99 minimum — this item clears it on its own.
Something wrong? Email support@worksheetpatch.com — if a technical problem keeps your purchase from working, we’ll fix it or refund you in full, and we review every request.
- 12 problems across 2 pages
- Answer key included
- PDF, print-and-go
- For morning work, classwork, homework, math centers, or sub plans
✅ Answer key included
- Instant PDF downloadPrintables are yours to keep
- Answer keys, markedEvery listing says if one is included
- Print & goReady for the printer
- Secure checkoutOne-time purchase, no subscription
Preview
Preview shows a portion of the worksheet. The full PDF includes every problem plus the answer key.
Highlights
- Grade
- Grade 1
- Subject
- Math
- Pages
- 2 · worksheet + answer key
- Answer key
- ✅ Included
- Quality
- ✓ Verified
- Class time
- about 15 min
Suggested use: morning work, classwork, homework, math centers, or sub plans
Classroom use
One license per teacher: print as many copies as you need for your own students and share through your class platform. Please don’t post the files publicly. License details.
Quick answers
What does this worksheet cover?
Grade 1 Math.
How many problems are included?
12 problems.
Does it include an answer key?
Yes — an answer key is included.
How much does it cost?
$0.99 — a one-time purchase, yours to keep. No subscription.
What format is the worksheet?
A printable PDF, 2 pages.
More grade 1 math worksheets
Single worksheets from the same shelf.
Addition Within 20
Comparing Two-Digit Numbers
Counting and Writing Numbers to 120
Candy Corn Fact Fluency
Start free
Two free PDF workbooks, on us
A K–1 math pack and a K–1 reading pack — 10 worksheets with answer keys. Join the email list and download them instantly. Free downloads just ask for an email, no account needed.