# Quick Answer: How Do U Find The Greatest Common Factor?

## What is the GCF of 15 and 20?

Greatest common factor (GCF) of 15 and 20 is 5..

## What is the GCF of 12 and 20?

The common factors of 12 and 20 are 1, 2 and 4. The greatest common factor of 12 and 20 is 4.

## What is the GCF of 6 and 9?

We found the factors and prime factorization of 6 and 9. The biggest common factor number is the GCF number. So the greatest common factor 6 and 9 is 3.

## What is the GCF of 1/3 and 2 5?

Thus, GCF of Fractions is 1/15. Finally, GCF of Fractions for 1/ 3 and 2/ 5 is 1/15.

## What is the GCF of 27 and 36?

91 Answer. The greatest common factor of 27 and 36 is 9 .

## What is the GCF of 6 and 18?

Greatest common factor (GCF) of 6 and 18 is 6. We will now calculate the prime factors of 6 and 18, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 6 and 18.

## What is the GCF of 27 and 30?

The prime factors and multiplicities 27 and 30 have in common are: 3. 3 is the gcf of 27 and 30. gcf(27,30) = 3.

## What is the GCF of 16 and 20?

Greatest common factor (GCF) of 16 and 20 is 4.

## What is the GCF of 7 and 28?

Answer and Explanation: The GCF of 7 and 28 is 7. The greatest common factor is the greatest number that is a factor for both the numbers you’re comparing.

## What is the GCF of 12 and 24?

We found the factors and prime factorization of 24 and 12. The biggest common factor number is the GCF number. So the greatest common factor 24 and 12 is 12.

## How do you find the GCF on a calculator?

Greatest Common Factor and Greatest Common Divisor The TI-84 Plus CE will find the GCF/GCD of two numbers. Example 1: To find the GCF of 24 and 30, press math, arrow over to NUM, and select 9:gcd( —either by moving the cursor down to option 9 and pressing enter, or by simply pressing 9).

## How do you find the greatest common factor of three numbers?

To find the greatest common factor (GCF) between numbers, take each number and write its prime factorization. Then, identify the factors common to each number and multiply those common factors together. Bam!

## What is the GCF of 12 and 18?

In terms of numbers, the greatest common factor (gcf) is the largest natural number that exactly divides two or more given natural numbers. Example 1: 6 is the greatest common factor of 12 and 18.

## What is the HCF of 16 and 24?

8Example 21 Consider the highest common factor of 16 and 24 again. The common factors are 1, 2, 4 and 8. So, the highest common factor is 8.

## What is the GCF of 12 and 30?

Earlier we found that the Common Factors of 12 and 30 are 1, 2, 3 and 6, and so the Greatest Common Factor is 6. The Greatest Common Factor of 12 and 30 is 6.

## What is the GCF of 20 24 and 40?

The common factors for 20,24,40 20 , 24 , 40 are 1,2,4 1 , 2 , 4 . The GCF (HCF) of the numerical factors 1,2,4 1 , 2 , 4 is 4 .