🔢Math Standard
Counting to 120 Worksheet
Fill in the missing numbers as you count to 120 — including the tricky jumps past 100.
1st Grade 12 min
✓ Answer key
1st Grade · Math
1st Grade Counting Worksheets
First graders count to 120 and, more importantly, learn what the numbers mean. These free printable 1st grade counting worksheets build counting to 120, skip counting by 2s, 5s, and 10s, and counting on from any number — including the tricky jumps across a new ten. Every worksheet includes a printable answer key and easy, standard, and challenge versions for differentiation.
Reviewed by ClassReady Editorial Team Last updated August 2026
Before this skill
- Rote counting to 20
- Recognizing numbers to 20
- One-to-one correspondence
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
- Skipping numbers when counting forward from an arbitrary starting point
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Frequently Asked Questions
What counting skills do 1st graders learn?
First graders count to 120, count forward from any number, and begin skip counting by 2s, 5s, and 10s as a foundation for multiplication.
How can I help my child with the 'new ten' transition?
Practice the changeover numbers specifically — 29 to 30, 99 to 100, 109 to 110 — since these are where children most often get stuck.
Are these counting worksheets free and printable?
Yes. Every worksheet is a free, printable PDF with an answer key, and no sign-up is required.