Grade 5 Math Worksheets Prime Composite Numbers GCF LCM Prime Factorization Printable Upper Elementary Number Sense Activities

Help your students master prime and composite numbers, GCF, LCM, and prime factorization with this engaging, hands-on worksheet pack! This evergreen resource is perfect for back to school, end-of-year review, spring, summer, fall, and winter, giving teachers ready-to-print, low-prep activities that reinforce number sense, problem-solving, and critical thinking all year long.

Designed for Grade 5 learners, this resource is also perfect for students in Grades 4–6, making it flexible for review, enrichment, or differentiated instruction. The printable PDF includes 12 black-and-white worksheets that make prime/composite numbers, GCF, and prime factorization visual, interactive, and fun. Ideal for classwork, homework, math centers, test prep, or homeschooling, this resource builds confidence and strong number sense.

📘 What’s Included – Teacher-Friendly Worksheets

• Introductory page explaining prime and composite numbers with clear examples
• Sorting worksheets to classify numbers as prime or composite
• Factor listing exercises to strengthen number sense
• Greatest Common Factor (GCF) worksheets for targeted practice
• Prime Factorization Tree pages to develop analytical thinking
• Coloring activities to identify prime and composite numbers creatively

All worksheets are black-and-white, print-and-go, saving teachers prep time while keeping students engaged.

🧠 Skills Covered

• Recognize prime and composite numbers
• Practice Greatest Common Factor (GCF)
• Learn prime factorization and factor trees
• Reinforce number sense, multiples, and problem-solving
• Independent and guided practice for Grades 4–6 math

🧒 Perfect For

• Grade 5 classrooms (main focus)
• Also suitable for Grades 4–6 for review or enrichment
• Math centers, morning work, or homework packets
• Homeschool learning and small-group instruction
• Quick assessments, partner work, or independent practice

📎 Product Details

• 12 printable worksheets (PDF)
• Black-and-white, ink-friendly format
• No prep required — print and go
• Grades: 5 (main focus), adaptable for Grades 4–6
• Subjects: Math, Number Sense, Prime & Composite Numbers, GCF, LCM, Prime Factorization

💡 Teacher Tips

• Use this pack for GCF review, prime factorization lessons, or factoring warm-ups
• Print the full packet or select specific pages for small-group instruction
• Keep this evergreen resource on hand for all-year math practice, from back to school to end-of-year review, spring, summer, fall, or winter