Greatest Common Factor: Examples

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Videos, worksheets, and solutions to help Grade 6 students learn how to find the greatest common factor using the upside down birthday cake method also called the ladder method.

How to find the Greatest Common Factor using the Birthday Cake Method?
1. Write down the numbers.
2. Draw a bracket, Find a common factor. Divide by the common factor.
3. Repeat step 2 until there are no more common factors.
4. Multiply the numbers on the left to get the GCF.

Finding the Greatest Common Factor using the Birthday Cake Method
This is an alternate way to determine the greatest common factor (GCF) for a set of numbers using the upside down birthday cake method.

Find the GCF and LCM of two or more numbers using the cake method.
LCM & GCF With the Ladder Method

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