Help students build a strong understanding of prime and composite numbers with this engaging, leveled card sort activity! Students will practice identifying whether numbers are prime or composite while developing their understanding of factors, multiplication, and number relationships.

This resource includes three levels of differentiated card sorts (2-digit, 3-digit, and 4-digit numbers), making it easy to meet the needs of all learners in your classroom.

Students will use their knowledge of factors to sort numbers into:

• Prime Numbers

• Composite Numbers

Perfect for math centers, partner activities, small groups, intervention, enrichment, review, or independent practice!

What’s Included:

⭐ Level 1: Two-Digit Prime & Composite Number Sort and  Extension Activity

⭐ Level 2: Three-Digit Prime & Composite Number Sort and  Extension Activity

⭐ Level 3: Four-Digit Prime & Composite Number Sort and  Extension Activity

📌 Prime & Composite Number Identification Guide

📌 Teacher Notes

📌 Answer Key for card sorts

📌 Extension Activity

Ways to Use This Resource:

⭐ Math Centers

⭐ Partner Games

⭐ Small Groups

⭐ Intervention Practice

⭐ Early Finisher Activity

⭐ Spiral Review

⭐ Test Prep Review

⭐ Homeschool Practice

Skills Practiced:

✔ Identifying prime numbers

✔ Identifying composite numbers

✔ Finding factors

✔ Using multiplication facts

✔ Using division strategies

✔ Developing number sense

✔ Explaining mathematical reasoning

Why Teachers Love This Resource:

❤️ Differentiated into three levels

❤️ Easy prep—just print, cut, and use

❤️ Provides hands-on practice instead of worksheets

❤️ Supports struggling learners and advanced students

❤️ Encourages mathematical conversations

❤️ Builds confidence with factors and number relationships

Suggested Grade Levels:

Grades 4–6

(Useful for review, intervention, enrichment, and differentiation)