Quick Answer: What Is The GCF Of 18 And 20?

What are the GCF of 18 and 30?

Greatest common factor (GCF) of 18 and 30 is 6.

We will now calculate the prime factors of 18 and 30, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 18 and 30..

How do you solve for GCF?

The greatest common factor, or GCF, is the greatest factor that divides two numbers. To find the GCF of two numbers: List the prime factors of each number. Multiply those factors both numbers have in common.

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 GCF of 12 and 9?

We found the factors and prime factorization of 9 and 12. The biggest common factor number is the GCF number. So the greatest common factor 9 and 12 is 3.

What is the GCF of 15 and 9?

We found the factors and prime factorization of 9 and 15. The biggest common factor number is the GCF number. So the greatest common factor 9 and 15 is 3.

What is the GCF of 15 and 18?

The factors of 18 are 18, 9, 6, 3, 2, 1. The common factors of 15 and 18 are 3, 1, intersecting the two sets above. In the intersection factors of 15 ∩ factors of 18 the greatest element is 3. Therefore, the greatest common factor of 15 and 18 is 3.

What is the GCF for 24 and 18?

Consider the numbers 18, 24, and 36. Their greatest common factor is 6. Another method of finding the greatest common factor is by using prime factorization.

What is the GCF of 24 and 66?

We found the factors and prime factorization of 24 and 66. The biggest common factor number is the GCF number. So the greatest common factor 24 and 66 is 6.

What are the factors of 18?

Table of Factors and MultiplesFactorsMultiples1, 2, 4, 8, 16161121, 17171191, 2, 3, 6, 9, 18181261, 191913341 more rows

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. To find the Greatest Common Factor (GCF) of two or more whole numbers, follow this procedure: Make a list of factors for each whole number.

What is the GCF of 15 and 30?

The common factors of 15 and 30 are 1, 3, 5, and 15. The greatest common factor is 15.

What is the GCF of 3 and 20?

Greatest common factor (GCF) of 3 and 20 is 1.

What is the GCF of and 18?

Example: Find the GCF of 18 and 27 The factors of 18 are 1, 2, 3, 6, 9, 18. The factors of 27 are 1, 3, 9, 27. The common factors of 18 and 27 are 1, 3 and 9. The greatest common factor of 18 and 27 is 9.

What is the GCF of 15 and 20?

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

What’s the GCF of 18 and 9?

Greatest common factor (GCF) of 9 and 18 is 9. We will now calculate the prime factors of 9 and 18, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 9 and 18.

How GCD is calculated?

In principle, greatest common divisors can be computed by determining the prime factorizations of the two numbers and comparing factors, as in the following example: to compute gcd(18, 84), we find the prime factorizations 18 = 2 · 32 and 84 = 22 · 3 · 7, and since the “overlap” of the two expressions is 2 · 3, gcd(18, …

What is the GCF of 10 and 15?

Greatest common factor (GCF) of 10 and 15 is 5. We will now calculate the prime factors of 10 and 15, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 10 and 15.

What is the GCF of 9 and 3?

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