Q:

What is the GCF of 88 and 22?

Accepted Solution

A:
Solution: The GCF of 88 and 22 is 22 Methods How to find the GCF of 88 and 22 using Prime Factorization One way to find the GCF of 88 and 22 is to compare the prime factorization of each number. To find the prime factorization, you can follow the instructions for each number here: What are the Factors of 88? What are the Factors of 22? Here is the prime factorization of 88: 2 3 × 1 1 1 2^3 × 11^1 2 3 × 1 1 1 And this is the prime factorization of 22: 2 1 × 1 1 1 2^1 × 11^1 2 1 × 1 1 1 When you compare the prime factorization of these two numbers, you can see that there are matching prime factors. You can now find the Greatest Common Factor of 88 and 22 by multiplying all the matching prime factors to get a GCF of 88 and 22 as 484: Thus, the GCF of 88 and 22 is: 484 How to Find the GCF of 88 and 22 by Listing All Common Factors The first step to this method of finding the Greatest Common Factor of 88 and 22 is to find and list all the factors of each number. Again, you can see how this is done by looking at the “Factors of” articles that are linked to above. Let’s take a look at the factors for each of these numbers, 88 and 22: Factors of 88: 1, 2, 4, 8, 11, 22, 44, 88 Factors of 22: 1, 2, 11, 22 When you compare the two lists of factors, you can see that the common factor(s) are 1, 2, 11, 22. Since 22 is the largest of these common factors, the GCF of 88 and 22 would be 22. Find the GCF of Other Number Pairs Want more practice? Try some of these other GCF problems: What is the GCF of 58 and 13? What is the GCF of 50 and 8? What is the GCF of 78 and 17? What is the GCF of 65 and 85? What is the GCF of 44 and 75?