# GCD/GCF and LCM/LCD

Greatest Common Divisor/Greatest Common Factor

Lesson 1: Understanding Common Divisors
Lesson 2: Common Divisors and Greatest Common Divisor
Lesson 3: Exercises on Getting the GCD
Lesson 4: Getting the GCD by Prime Factorization
Lesson 5: GCD and Reducing Fractions to Lowest Terms

Greatest Common Divisor Tutorial Series (New and Improved)

Lesson 1: Divisors, Common Divisors, and Greatest Common Divisor
Lesson 2: Finding the GCD of Two ore More Numbers
Lesson 3: Finding the GCD Using the Ladder Method
Lesson 4: The Difference between GCD and GCF
Lesson 5: Finding the GCF by Prime Factorization (without Exponents)
Lesson 6: Finding the GCF by Prime Factorization (with Exponents)
Lesson 7: Finding the GCF by Factor Trees
Lesson 8: Using the GCD to Reduce Fractions to Lowest Terms

Least Common Multiple
Lesson 1:  Least Common Multiple Part 1
Lesson 2: Least Common Multiple Part 2
Lesson 3: Least Common Multiple Part 3

Least Common Multiple Series (New and Improved)

Lesson 1: Multiples, Common Multiples, and Least Common Multiple
Lesson 2: Finding the LCM Using the Ladder Method
Lesson 3: Finding the LCM Using the Ladder Method – More Examples
Lesson 4: Understanding Least Common Denominator 