What is the gcf of 6 and 9

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Factoring and Multiples

1. What is the GCF of 6 and 9?

Answer: GCF of 6 and 9 is 3.

2. What are the Factors of 6?

Answer: Factors of 6 are 1, 2, 3, 6. There are 4 integers that are factors of 6. The greatest factor of 6 is 6.

3. What are the Factors of 9?

Answer: Factors of 9 are 1, 3, 9. There are 3 integers that are factors of 9. The greatest factor of 9 is 9.

4. How to Find the GCF of 6 and 9?

Answer:

Greatest Common Factor of 6 and 9 = 3

Step 1: Find the prime factorization of 6

6 = 2 x 3

Step 2: Find the prime factorization of 9

9 = 3 x 3

Step 3: Multiply those factors both numbers have in common in steps i) or ii) above to find the gcf:

GCF = 3

Step 4: Therefore, the greatest common factor of 6 and 9 is 3

The gcf of 6 and 9 is the largest positive integer that divides the numbers 6 and 9 without a remainder. Spelled out, it is the greatest common factor of 6 and 9. Here you can find the gcf of 6 and 9, along with a total of three methods for computing it.

This Greatest Common Factor Calculator is Really Cool! Click To TweetIn addition, we have a calculator you should check out. Not only can it determine the gcf of 6 and 9, but also that of three or more integers including six and nine for example. Keep reading to learn everything about the gcf (6,9) and the terms related to it.

What is the GCF of 6 and 9

If you just want to know what is the greatest common factor of 6 and 9, it is 3. Usually, this is written as

gcf(6,9) = 3

The gcf of 6 and 9 can be obtained like this:

  • The factors of 6 are 6, 3, 2, 1.
  • The factors of 9 are 9, 3, 1.
  • The common factors of 6 and 9 are 3, 1, intersecting the two sets above.
  • In the intersection factors of 6 ∩ factors of 9 the greatest element is 3.
  • Therefore, the greatest common factor of 6 and 9 is 3.

Taking the above into account you also know how to find all the common factors of 6 and 9, not just the greatest. In the next section we show you how to calculate the gcf of six and nine by means of two more methods.

How to find the GCF of 6 and 9

The greatest common factor of 6 and 9 can be computed by using the least common multiple aka lcm of 6 and 9. This is the easiest approach:

gcf (6,9) = = 3

Alternatively, the gcf of 6 and 9 can be found using the prime factorization of 6 and 9:

  • The prime factorization of 6 is: 2 x 3
  • The prime factorization of 9 is: 3 x 3
  • The prime factors and multiplicities 6 and 9 have in common are: 3
  • 3 is the gcf of 6 and 9
  • gcf(6,9) = 3

In any case, the easiest way to compute the gcf of two numbers like 6 and 9 is by using our calculator below. Note that it can also compute the gcf of more than two numbers, separated by a comma. For example, enter 6,9. The calculation is conducted automatically.

Similar searched terms on our site also include:

  • GCF of 6 and 14
  • GCF of 6 and 15
  • GCF of 6 and 16

Use of GCF of 6 and 9

What is the greatest common factor of 6 and 9 used for? Answer: It is helpful for reducing fractions like 6 / 9. Just divide the nominator as well as the denominator by the gcf (6,9) to reduce the fraction to lowest terms.

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Properties of GCF of 6 and 9

The most important properties of the gcf(6,9) are:

  • Commutative property: gcf(6,9) = gcf(9,6)
  • Associative property: gcf(6,9,n) = gcf(gcf(9,6),n)

The associativity is particularly useful to get the gcf of three or more numbers; our calculator makes use of it.

To sum up, the gcf of 6 and 9 is 3. In common notation: gcf (6,9) = 3.

If you have been searching for gcf 6 and 9 or gcf 6 9 then you have come to the correct page, too. The same is the true if you typed gcf for 6 and 9 in your favorite search engine.

Note that you can find the greatest common factor of many integer pairs including six / nine by using the search form in the sidebar of this page.

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Are you on the hunt for the GCF of 6 and 9? Since you're on this page I'd guess so! In this quick guide, we'll walk you through how to calculate the greatest common factor for any numbers you need to check. Let's jump in!

Want to quickly learn or show students how to find the GCF of two or more numbers? Play this very quick and fun video now!

First off, if you're in a rush, here's the answer to the question "what is the GCF of 6 and 9?":

GCF of 6 and 9 = 3

What is the Greatest Common Factor?

Put simply, the GCF of a set of whole numbers is the largest positive integer (i.e whole number and not a decimal) that divides evenly into all of the numbers in the set. It's also commonly known as:

  • Greatest Common Denominator (GCD)
  • Highest Common Factor (HCF)
  • Greatest Common Divisor (GCD)

There are a number of different ways to calculate the GCF of a set of numbers depending how many numbers you have and how large they are.

For smaller numbers you can simply look at the factors or multiples for each number and find the greatest common multiple of them.

For 6 and 9 those factors look like this:

  • Factors for 6: 1, 2, 3, and 6
  • Factors for 9: 1, 3, and 9

As you can see when you list out the factors of each number, 3 is the greatest number that 6 and 9 divides into.

Prime Factors

As the numbers get larger, or you want to compare multiple numbers at the same time to find the GCF, you can see how listing out all of the factors would become too much. To fix this, you can use prime factors.

List out all of the prime factors for each number:

  • Prime Factors for 6: 2 and 3
  • Prime Factors for 9: 3 and 3

Now that we have the list of prime factors, we need to find any which are common for each number.

In this case, there is only one common prime factor, 3. Since there are no others, the greatest common factor is this prime factor:

GCF = 3

Find the GCF Using Euclid's Algorithm

The final method for calculating the GCF of 6 and 9 is to use Euclid's algorithm. This is a more complicated way of calculating the greatest common factor and is really only used by GCD calculators.

If you want to learn more about the algorithm and perhaps try it yourself, take a look at the Wikipedia page.

Hopefully you've learned a little math today and understand how to calculate the GCD of numbers. Grab a pencil and paper and give it a try for yourself. (or just use our GCD calculator - we won't tell anyone!)

If you found this content useful in your research, please do us a great favor and use the tool below to make sure you properly reference us wherever you use it. We really appreciate your support!

  • "Greatest Common Factor of 6 and 9". VisualFractions.com. Accessed on September 9, 2022. http://visualfractions.com/calculator/greatest-common-factor/gcf-of-6-and-9/.

  • "Greatest Common Factor of 6 and 9". VisualFractions.com, http://visualfractions.com/calculator/greatest-common-factor/gcf-of-6-and-9/. Accessed 9 September, 2022.

  • Greatest Common Factor of 6 and 9. VisualFractions.com. Retrieved from http://visualfractions.com/calculator/greatest-common-factor/gcf-of-6-and-9/.