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Greatest Common Factor: Examples

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More Lessons for Grade 6

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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


Rotate to landscape screen format on a mobile phone or small tablet to use the Mathway widget, a free math problem solver that answers your questions with step-by-step explanations.

You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.

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