1st Grade Counting to 120 Worksheet
Fill in the missing numbers as you count to 120 — including the tricky jumps past 100.
- Homework
- Morning Work
- Centers
- Review
- Intervention
Download the Free Printable PDF
No sign-up required. Clean, low-ink US Letter format.
- Grade
- 1st Grade
- Subject
- Math
- Skill
- Counting
- Topic
- counting and number order to 120
- Difficulty
- Standard
- Time
- 12 minutes
- Pages
- 2 (incl. answer key)
- Format
- Printable PDF (US Letter)
- Answer key
- Included
- Best for
- homework, morning work, centers, review, intervention
Worksheet details
What This Worksheet Practices
Students will count, read, and write numbers to 120, filling in missing numbers in a sequence.
- Counting in order to 120
- Filling missing numbers in a sequence
- Crossing into a new ten and past 100
Worksheet Preview
Counting all the way to 120
First grade extends counting past 100, all the way to 120. The numbers themselves are easy to write — the tricky part is the decade changes: knowing that 99 is followed by 100, and 109 by 110. Steady practice through those transitions builds the place-value sense behind every bigger number.
How to use it
A 120 chart is the perfect companion — have your child point and count aloud, slowing down at 100, 110, and 120. Watch for digit reversals past 100. Builds on counting to 20 and supports place value.
👩🏫 Teacher note
The tricky spots are the decade changes (99 to 100, 109 to 110). A 120 chart is a great companion; have students point and count aloud through those transitions.
🏠 Parent note
Count out loud together, especially around 100, 110, and 120. Then fill in the blanks.
Common Mistakes to Watch For
- Stumbling at the change to a new ten (e.g., 99 to 100, 109 to 110)
- Reversing digits in numbers past 100
Answer Key
Each answer lists the missing numbers.
⬇ Download Answer Key (PDF)Related Worksheets
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