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Skills Covered

Build addition and subtraction fluency
Solve equations in standard format
Develop mental math strategies

Strengthen number fact recall
Practice computation accuracy
Apply mathematical reasoning

How to Use This Worksheet

Use a number line to solve addition problems within 20. A key visual strategy for teen numbers.

Tips for Success

Encourage students to check their work with the inverse operation
Allow use of manipulatives or drawings for support
Time practice sessions to build fluency gradually
Celebrate improvement in speed and accuracy over time

Common Core Standards Alignment

This worksheet supports the following Common Core State Standards for Mathematics:

1.OA.C.6 Add and subtract to 20, working fluently within 10, with strategies like counting on, making ten, fact families and doubles plus one.
2.MD.B.6 Show whole numbers as distances from 0 on an evenly marked number line, and show sums and differences up to 100 as jumps on it.

Number Line Addition to 20

1st Grade

Use a number line to solve addition problems within 20. A key visual strategy for teen numbers.

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What’s Included

5 worksheet pages
Answer keys included
Grade level: 1st
Category: Addition & Subtraction
Print-ready PDF format

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Free to print and share

This worksheet is free to download, print, copy, and hand out in your classroom or at home. You do not need to create an account, and there are no watermarks on the PDF.

Skills Covered

How to Use This Worksheet

Tips for Success

Common Core Standards Alignment

Number Line Addition to 20

What’s Included

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