What is The GCF of 18 and 45
Greatest Common Factor is the largest possible number which divides the given numbers exactly without any remainder.
Answer: GCF of 18 and 45 is 9
Explanation:
We can find the GCF by the following methods

Prime factorization Method

Listing the common factors method

Long division Method
GCF of 18 and 45 by Listing the Common Factors
Factors of 18 : 1, 2, 3, 6, 9 and 18
Factors of 45 : 1, 3, 5, 9, 15 and 45
Common Factors of 18 and 45 : 1, 3 and 9
GCF of 18 and 45 is 9
GCF of 18 and 45 by Long Division

Step 1: Divide 45 by 18 and check the remainder.

Step 2: Taking the remainder of the above step as the divisor and the divisor of the above step as the dividend, perform the long division again.

Step 3: Continue until the remainder becomes 0