Finding factors is an integral aspect of multiplication. Although there are two examples here, they don't illustrate the process so you will still need to model this a few times for scholars. First, mathematicians list the factors for nine double-digit numbers. The next four provide a list and they circle those numbers that are factors for a given value. Finally, there is a brief introduction to prime numbers to prepare learners to list all the prime numbers between 31 and 65, the same span used for the rest of the values here. Consider numbering them before copying to make review smoother.