7th grade - GCF and LCM using Prime Factorization

Today we learned how to find the Lowest Common Multiple and Greatest common Factor of a set of numbers by using prime factorization. Below is a review of some the concepts we discussed in class and a couple videos that may be helpful.

https://www.khanacademy.org/math/pre-algebra/factors-multiples/least_common_multiple/v/least-common-multiple-exercise-2

https://www.khanacademy.org/math/pre-algebra/factors-multiples/greatest_common_divisor/v/lcm-and-gcf-greatest-common-factor-word-problems

Homework: 
Exercise 1.3 (page 12) # 1 – 2 (a, c, e ONLY), #3
Exercise 1.4 (page 16) #1 – 2  (a, c, e ONLY), #3