1. Find the GCF of 15 and 30.
The factors of 15 are_______
The factors of 30 are_______
Their common factors are_______
Their GCF____


2. What is the LCM of 4 and 5?
The multiples of 4 are_______
The multiples of 5 are______
Their common multiples are_____
Their LCM is______​