This worksheet introduces pre-algebra/algebra 1 students to creating a prime factor tree. It gives a step-by-step instruction to create a prime factor tree. The worksheet also comes with practice problems (4-true/false, 6 prime factor tree problems, and 1 bonus create-your-own tree problems).

It is best to use the first page in class to guide students to create a factor tree using the given number (120). Show students that there are multiple possible paths and students will still get the same prime factorization. Then students can explore their own factor tree.

The True/false questions also asks students to explain their reasoning/give examples. This is a good way to ensure students understand the concepts of prime number and prime factorization.