November packages are in. A whole month of ELA or Math for your grade — $4.99 each. Shop the month →

Home › Grade 1 › Math

Grade 1MathAddition within 20

Addition Within 20

Grade 1 math worksheet: Addition within 20 — 12 problems. No answer key included. Help your 1st grader build addition fluency with 12 friendly practice problems adding numbers within 20. Free printable PDF

12 problems · Difficulty: easy

Want more like this? Grade 1 Coins: 5-Day Set — 5 worksheets for $2.99, yours to keep.

  • 12 problems across 2 pages
  • No answer key included
  • PDF, print-and-go
  • For morning work, classwork, homework, math centers, or sub plans
🎓 Share to Google Classroom

📝 No answer key included · ✅ Free for home & classroom use

  • 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

Page 1 preview of Addition Within 20
Page 1 — preview

The free PDF includes all 2 pages.

Highlights

Grade
Grade 1
Subject
Math
Pages
2 · worksheet
Answer key
Not included
Quality
✓ Verified
Class time
about 15 min

Suggested use: morning work, classwork, homework, math centers, or sub plans

What students will learn

Students practice: Addition within 20.

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 — Addition within 20.

How many problems are included?

12 problems.

Does it include an answer key?

No — no answer key is needed for this sheet.

Is this worksheet free?

Yes — it is a free printable PDF. Download it from the button above.

What format is the worksheet?

A printable PDF, 2 pages.

More grade 1 math worksheets

Single worksheets from the same shelf.

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.