GCF Finder: Find the Greatest Common Factor of Each Pair!

This worksheet helps students build number sense by finding the Greatest Common Factor (GCF) of given pairs of numbers. Ideal for upper elementary students, it strengthens skills in identifying common factors, preparing them for more advanced topics like simplifying fractions, LCM, and algebraic factoring.

Skills You Build:

• Identifying all factors of a number

• Comparing factor lists to find the greatest common one

• Enhancing mental math and factorization fluency

• Strengthening number relationships

• Laying the groundwork for LCM, simplification, and algebra