Reflection: Developing a Conceptual Understanding Finding the Least Common Multiple (LCM) - Section 4: Finding the LCM

 

Finding the LCM using the ladder showing how to use the ladder to find the LCM

 

To find the LCM of 3 or more numbers:  Only 2 of the number has to have a common factor.  The other numbers would move up the step.  You would continue this process until the only common factor among all the numbers is 1. 

  Developing a Conceptual Understanding: Using the ladder to find the LCM
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Finding the Least Common Multiple (LCM)

Unit 4: Number Sense
Lesson 7 of 26

Objective: SWBAT find the LCM of 2 whole numbers less than or equal to 12

Big Idea: The LCM is a useful tool to use when comparing fractions and finding common denominators.

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