Addition — Grade 1 — Numbers 1–20
Free printable addition worksheets for grade 1 focused on numbers 1–20. Randomized problems; optional answer key. PDF.
Customize this template with your preferred settings, preview live, and download as PDF.
Customize & Download PDFHow to Make Addition — Grade 1 — Numbers 1–20
- Step 1
Open the Addition Worksheets generator
Start from the main Addition Worksheets tool so you can adjust the printable instead of downloading a fixed image.
- Step 2
Match the variation settings
Use the controls to match this Addition — Grade 1 — Numbers 1–20 use case, including paper size, layout, color, difficulty, or other available options.
- Step 3
Preview the printable
Check the live preview to confirm spacing, labels, line weight, and printable area before creating the PDF.
- Step 4
Download or print the PDF
Download the browser-generated PDF or print it directly. For exact sizing, use actual size or 100 percent in your printer dialog.
About Addition — Grade 1 — Numbers 1–20
Our free printable grade 1 addition worksheets focus on sums and facts within 1–20, perfect for building foundational math skills. Each worksheet generates random problems, ensuring fresh practice every time. The simple, clean layout helps young learners focus, and you can include an optional answer key for self-checking. These PDFs are ideal for classroom warm-ups, homework, or extra practice at home. Designed to align with common core standards, they cover adding two numbers from 1 to 20, reinforcing number sense and fluency. Print as many as you need—no sign-up required. Just set the number range to 1–20 in our Addition Worksheets tool and hit print.
Best For
- First graders practicing addition facts within 20
- Teachers needing quick, no-prep worksheets for math centers or morning work
- Homeschool parents reinforcing number bonds and sums up to 20
- Tutors providing extra practice for students struggling with basic addition
- Parents who want a simple, distraction-free worksheet for homework
- Creating a Grade 1 Addition (1–20) printable quickly
Recommended Settings
- Set number range to 1–20 for both addends to stay within grade-1 scope
- Enable answer key option for self-checking or easy grading
- Choose portrait layout with standard letter size (8.5x11 inches)
- Select 20–30 problems per page for a manageable workload
- Disable visual aids like pictures to keep focus on numeric addition
- Start from the Addition Worksheets generator linked above
When to Choose a Different Paper
This template is strongest when the grid size, paper size, and line style match your assignment or project. Consider a different printable when one of these caveats applies:
- Advanced students ready for addition beyond 20 or with regrouping
- Kindergarteners who are still learning numbers 1–10 (try our K-level worksheets instead)
- Projects that need fully custom text layout beyond the generator controls
- Documents that require official, legal, medical, or school-district wording
Frequently Asked Questions
How do I generate a grade 1 addition worksheet with numbers 1–20?
Visit our Addition Worksheets tool, set both addend ranges to 1–20, and choose your preferred number of problems. Then click 'Generate' and print the PDF. An answer key option is available.
Are these worksheets aligned with common core standards?
Yes, they target CCSS.MATH.CONTENT.1.OA.C.6, which covers adding and subtracting within 20, demonstrating fluency for sums within 10.
Can I customize the worksheet further?
Our generator lets you adjust the number range, problem count, and answer key visibility. For more customization, consider our premium tools.
Is there a limit to how many worksheets I can print?
No, you can generate and print unlimited worksheets for free. Each PDF is unique due to randomized problems, so you'll never run out of fresh practice.