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The factor tree finds the prime factorization. The prime factorization finds the LCM.
Example: 30 and 42
Factor them.
30
15,2
5,3,2
42
21,2
7,3,2
2 x 3 x 5 = 30
2 x 3 x 7 = 42
Select the highest amount of each factor.
2 x 3 x 5 x 7 = 210, the LCM
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How do you find GCF and LCM?
To find the GCF and the LCM you have to first at least try to use prime factorization. So use factor trees. Or for the LCM find th least common multiples of the number.
What is the LCM of 100 and 60?
The LCM of 100 and 60 is 300.You can find that is by doing the simplest thing like upside down division of a factor tree. You have to divide with a prime number such as 2,3,5,7,11,13 or a number that cannot be divided by anything but 1 and itself.
Can the HCF of two numbers be a factor of their LCM?
The HCF is always a factor of the LCM of two numbers. The HCF is a factor of both the numbers which are factors of their LCM. Thus the HCF is also a factor of the LCM of the two numbers.
How do you find the factor tree for 66?
66 33,2 11,3,2
Find the prime factorization of 900 using a factor tree?
2x2x222
What is the factor tree for 160 the LCM and gcm to?
16080,240,2,220,2,2,2102,2,2,25,2,2,2,2,2You need another number to compare this one with to find a GCF or an LCM.
What is the LCM of 12 6 and 3?
The LCM is 12.
What happens if the slide ladder does not work for the GCF and LCM?
you have to use a factor tree
How do you find the LCM factor tree for 12 and 16?
12 = 2*2*316 = 2*2*2*2, with the common factors underlined. So LCM = 2*2*2*3 = 24.
How did you find 4and LCM 600?
Since 4 is a factor of 600, it is automatically the LCM of this problem.
What is LCM factor of 3040?
You need at least two numbers to find an LCM. If that's 30 and 40, the LCM is 120.
If the Greatest Common Factor of two numbers is 12 and their product is 1728 find theie LCM?
The LCM is 144.
How do you find two numbers if HCF and LCM are known?
The product of the GCF and the LCM of two numbers is equal to the product of the original two numbers. Multiply the GCF and the LCM. The original two numbers will be another factor pair of that total. Find the factor pair that has that GCF and LCM.
When is it useful to find the LCM or Greatest common factor in a problem?
Find the GCF when you want to simplify a fraction. Find an LCM when you want to add and subtract fractions.
How do you find GCF and LCM?
To find the GCF and the LCM you have to first at least try to use prime factorization. So use factor trees. Or for the LCM find th least common multiples of the number.
How do you find the answer to this factor tree of 145?
145 5,29 Not much of a tree. More like a factor shrub.
What is the LCM of 100 and 60?
The LCM of 100 and 60 is 300.You can find that is by doing the simplest thing like upside down division of a factor tree. You have to divide with a prime number such as 2,3,5,7,11,13 or a number that cannot be divided by anything but 1 and itself.
