What is the GCF of 44 amd 45?

Answer 1

The greatest common factor of 42 and 45 is 3.

Method 1: Listing Factors List all the factors of both numbers and the highest factor that is the same is the greatest common factor.

Factors of 42: 1, 2, 3, 6, 7, 14, 21

Factors of 45: 1, 3, 5, 9, 15

The greatest common factor is 3.

Method 2: Prime Factorization

Find the prime factorization of each number. The prime numbers that the numbers all share multiply to the great common factor.

42=2*3*7

45=3*3*5

42 and 45 share one 3. Therefore, the greatest common factor is 3.

Answer 2

The factors of 42 are:

1, 2, 3, 6, 7, 14, 21, 42

The factors of 53 are:

1, 53

The Greatest Common Factor (GCF) is:

1

Answer 3

The GCF is: 15

Answer 4

The GCF of consecutive integers is 1.

Answer 5

The GCF is 5.

Answer 6

The GCF is 5.

Answer 7

GCF(10, 45) = 5.

Answer 8

The GCF is 5.