What is the GCF and LCM of 36 and 45?

Answer 1

9

36 = 2^2 x 3^2

45 = 5 x 3^2

Since the prime common factor is 3^2, then 9 is the GCF of 36 and 45.

or you can find the factors of each number, and look for the greatest common factor.

Factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, and 36.

Factors od 45 are 1, 3, 5, 9, 15, and 45.
The GCF is 9.
The greatest common factor of the numbers 36 and 45 is the number 9.

Answer 2

The GCF is 3.

Answer 3

The GCF is 9.

Answer 4

The GCF is 9.

Answer 5

The GCF is 3.

Answer 6

The GCF is 1.

Answer 7

The GCF is 9.

Answer 8

9 and 180, respectively.