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Find the greatest common factor (GCF) using the prime factorization method with this sixth-grade practice worksheet!

Use this number theory worksheet to practice finding the greatest common factor of two numbers by finding the prime factorization! 

Grow students’ math skills with more practice finding the greatest common factor by using factor trees to find the prime factorization.

Students practice solving a variety of equations, then determine if the answer is a prime number.

In this math puzzle, children must solve a variety of equations to find each of eight clues to find the integers that make up an eight-digit number.