# When-so-you-find-the-gcf

### How To : Use the upside-down birthday cake method to find a GCF

Need to find the greatest common factor for a set of numbers? Easy as cake. Learn how to find GCFs using the upside-down birthday cake method with this free video lesson. From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematic ...more

### How To : Factor a trinomial, find the GCF, then group

This lesson describes the method to find the factors of a trinomial, which consists of three terms, by grouping. First of all, factor out the greatest common factor (GCF), and write the reduced trinomial in parentheses. Let the terms of the trinomial be written in order of exp ...more

### How To : Find the greatest common factor

If you've ever been asked to find the GCF, or Greatest Common Factor, of a series of numbers or algebraic expressions, check out this video to learn how. The methods for finding the greatest common factor for a series of numbers and for an algebraic expression are similar. S ...more

### How To : Find the greatest common factor (GCF)

This video tutorial shows you the proper way to find the GCF, or greatest common factor. While this is not necessary, the video shows a method of drawing a T chart. List both the numbers that you need to find the GCF, then list there factors, including the number 1. Once you d ...more

### How To : Find the GCF for two terms using factor trees

Need to find the greatest common factor for a set of two numbers? Try a factor tree! Learn how with this free video lesson. From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, tha ...more

### How To : Find the GCF

What Is GCF? GCF is an acronym for "Greatest Common Factor." GCF is the largest number that can divides evenly into 2 or more numbers. Step 1: The first step to finding the GCF is to use what you know about prime factorization. Using a factor tree, find the prime factors of ...more

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