Description
Build number sense for numbers 1-20 with these 20 no-prep Number Sense Color by Code worksheets for kindergarten. Each page focuses on a single number. Students color the picture by using a number code and matching the color to the number forms, revealing the hidden numeral when the worksheet is complete. This activity builds number sense fluency and subitizing skills.
What’s Included
- 20 Number Sense Color by Code worksheets (one per number, 1-20)
- Each worksheet shows a different hidden numeral
- Numbers 1-10 include dot patterns, ten frames, dice, dominoes, tally marks, finger patterns, number words, and counters
- Numbers 11-20 add base ten block representations and 10+ addition sentences for early place value connections
- Print and go, no prep required
Skills Covered
This resource supports students as they practice:
- Number recognition for numbers 1-20
- Subitizing: identifying quantities shown as dot patterns, dice, dominoes, ten frames, tally marks, and finger patterns
- Number forms: matching numerals, number words, and visual representations of the same quantity
- Teen number concepts: numbers 11-20 shown as 10 + more for early place value connections
Why Teachers Love This Resource
- Covers more representations than a standard worksheet: dot patterns, ten frames, dice, dominoes, tally marks, fingers, number words, counters, and base ten (teen numbers)
- Natural differentiation: assign numbers 1-10 for students building foundational fluency, extend to 1-20 as students grow
- Consistent format throughout: students learn the routine once and apply it to every number
How to Use This Resource
These number sense worksheets are ideal for:
- Math centers and guided math rotations
- Morning tubs and morning work
- Early finishers
- Small groups
- Sub plans and homework
If you are building number sense for numbers 1-20 and want a print-and-go activity that runs independently, these Number Sense Color by Code worksheets give students meaningful, self-checking practice with number recognition, subitizing, and number forms across the full range from 1 to 20.
