A few days ago
Anonymous

what is the grastest common factor?

i need the gcf can u explain how to do it

Top 3 Answers
A few days ago
Anonymous

Favorite Answer

The greatest common factor of two or more whole numbers is the largest whole number that divides evenly into each of the numbers. There are two ways to find the greatest common factor.

The first method is to list all of the factors of each number, then list the common factors and choose the largest one.

Example:

Find the GCF of 36 and 54.

The factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, and 36.

The factors of 54 are 1, 2, 3, 6, 9, 18, 27, and 54.

The common factors of 36 and 54 are 1, 2, 3, 6, 9, 18

Although the numbers in bold are all common factors of both 36 and 54, 18 is the greatest common factor.

The second method for finding the greatest common factor is to list the prime factors, then multiply the common prime factors.

Example:

Let’s use the same numbers, 36 and 54 again to find their greatest common multiple.

The prime factorization of 36 is 2 x 2 x 3 x 3

The prime factorization of 54 is 2 x 3 x 3 x 3

Notice that the prime factorizations of 36 and 54 both have one 2 and two 3s in common. So, we simply multiply these common prime factors to find the greatest common factor. Like this…

2 x 3 x 3 = 18

Both methods for finding the greatest common factor work!

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A few days ago
Anonymous
GCF is when u have 2 numbers and u try to figure out what factor is the most common with the 2 numbers
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A few days ago
lamlo32
is the number that the 2 or more numbers can muliply in to

sorry for not saying it right i suck at explaining

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