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To find both of these you first need to break up the numbers into their prime factors:
18 = 2x3x3
20 = 2x2x5
Th next step is to identify any common prime factors. The only common prime factor between these two is a single 2. The GCF is therefore 2. The LCM is every other factor multiplied together:
3x3x2x2x5=180, so the LCM of 18 and 20 is 180.
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What is the LCM and the GCM of 18 and 20?
The LCM is 120 and the GCF is 2.
What is the LCM and GCF of 15 and 20?
The LCM of 15 and 20 is 60. The GCF is 5.
What is the gcf and the lcm of 16 and 20?
The gcf of 16 and 20 is 4. The lcm of 16 and 20 is 80
What is the GCF and LCM of 18 and 6?
The LCM of these numbers is 18. LCM is Least Common Multiple. The GCF of these numbers is 6. GCF is Greatest Common Factor.
What are two numbers whose GCF is 20 and whose LCM is 100?
20 and 100.GCF is 20, and LCM is 100.
What is the LCM and the GCM of 18 and 20?
The LCM is 120 and the GCF is 2.
What is the gcf and the LCM of 18 and 20 using prime factorization?
2 x 3 x 3 = 18 2 x 2 x 5 = 20 The GCF is 2. The LCM is 180.
What is the least common multiple (LCM) of 6 and 9What is the greatest common factor (GCF) of 40 and 100?
The LCM is 18. The GCF is 20.
The GCF and LCM of 10 and 18?
The GCF of 10 & 18 is 2.The LCM of 10 & 18 is 90.
What is the LCM and GCF of 12 18 and 24?
LCM(12, 18, 24) = 72; GCF(12, 18, 24) = 6.
What is the GCF and Lcm of 10 and 20?
The GCF and LCM of 10 and 20 are 10 and 20, respectively.
What is the answer of 20 and 40 is it LCM or GCF?
The LCM and GCF of 40 and 20 are 40 and 20 respectively.
What is the gcf LCM of 18 45?
The LCM is 90. The GCF is 9.
What is the LCM and GCF of 15 and 20?
The LCM of 15 and 20 is 60. The GCF is 5.
What is the gcf and LCM of 18 24 and 30?
The GCF is 6. The LCM is 360.
What is the gcf and the lcm of 16 and 20?
The gcf of 16 and 20 is 4. The lcm of 16 and 20 is 80
What is the GCF and LCM of 18 and 6?
The LCM of these numbers is 18. LCM is Least Common Multiple. The GCF of these numbers is 6. GCF is Greatest Common Factor.
