Find GCF & LCM Using Factor Trees | Printable Math Worksheets

Find GCF & LCM Using Factor Trees | Printable Math Worksheets

Make learning Greatest Common Factor (GCF) and Least Common Multiple (LCM) simple, visual, and effective with these Factor Tree Worksheets. Designed for Grades 5–8, this resource helps students master both concepts by breaking numbers down into their prime factors and applying them to find the GCF and LCM.

Students will use step-by-step factor tree diagrams to strengthen their understanding of factors, multiples, and prime factorization—essential skills for solving problems in fractions, ratios, and algebra.

Key Features:
20 printable worksheets focused on finding GCF & LCM using factor trees
Covers both prime factorization and visual factor tree methods
Builds strong foundations for simplifying fractions, solving ratio problems, and algebra readiness
Gradual progression from basic to more challenging problems
Enhances problem-solving, critical thinking, and number sense
Includes answer keys for easy grading and self-checking
Aligned with Common Core and international math standards
Ideal for classwork, homework, math centers, intervention, and test prep

Help your students gain confidence and fluency in finding GCF and LCM through factor trees, making abstract concepts accessible and engaging.

Worksheets are made in 8.5” x 11” Standard Letter Size. This resource is helpful in students’ assessment, Independent Studies, group activities, practice and homework. This product is available in PDF format and ready to print as well. AI is used in some parts of the product, where deemed necessary.