Kindergarten Counting to 20 Worksheet
Extend counting into the teens by filling in missing numbers to 20, with a number line to lean on.
- Centers
- Homework
- Morning Work
- Review
Download the Free Printable PDF
No sign-up required. Clean, low-ink US Letter format.
- Grade
- Kindergarten
- Subject
- Math
- Skill
- Counting
- Topic
- counting and number order to 20
- Difficulty
- Standard
- Time
- 10 minutes
- Pages
- 2 (incl. answer key)
- Format
- Printable PDF (US Letter)
- Answer key
- Included
- Best for
- centers, homework, morning work, review
Worksheet details
What This Worksheet Practices
Students will count within 20 and identify missing numbers and the number that comes before or after, especially in the teens.
- Counting in order to 20
- Filling missing numbers in the teens
- Finding the number before and after
Worksheet Preview
Counting through the teens
Counting to 20 sounds like a small step after 10, but the teens are tricky: the number names stop being predictable (eleven, twelve) and writing them invites reversals like 41 for 14. This worksheet keeps every problem in the 11–20 range so students get focused practice exactly where counting tends to wobble.
How to use it
Lean on the number line at the top. Instead of counting from 1 every time, have students find a number they already know and take one step — right for the number after, left for the number before. Pair this page with counting to 10 for students who still need the smaller range.
👩🏫 Teacher note
The teens are where counting often breaks down. Point to the number line and count aloud from a nearby anchor number rather than from 1 each time.
🏠 Parent note
Use the number line at the top. Find a number you know, then move one step right for 'after' or one step left for 'before.'
Common Mistakes to Watch For
- Skipping numbers in the teens (e.g., 13, 15)
- Reversing teen numbers when writing (e.g., writing 41 for 14)
Answer Key
The answer key lists each missing number.
⬇ Download Answer Key (PDF)Related Worksheets
Ten-Frames to 10 Worksheet
Read each ten-frame and write how many dots — a powerful way to build number sense and see numbers as 'five and some more.'
Count the Objects (to 10) Worksheet
Count each group of pictures and write how many — a hands-on first step into counting up to 10.
Counting to 10 Worksheet
Practice counting to 10 by filling in missing numbers and finding what comes before and after.
Numbers Before and After Worksheet
Write the number that comes before, after, or between, counting to 20.
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Does it come with an answer key?
Yes — a complete answer key is included.
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