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Example: 30 and 42
2 x 3 x 5 = 30
2 x 3 x 7 = 42
Combine the factors, eliminating duplicates.
2 x 3 x 5 x 7 = 210, the LCM
Example: 30 and 42
Factor them.
2 x 3 x 5 = 30
2 x 3 x 7 = 42
Combine the factors, eliminating duplicates.
2 x 3 x 5 x 7 = 210
Example: 30 and 42
30
15,2
5,3,2
42
21,2
7.3.2
2 x 3 x 5 = 30
2 x 3 x 7 = 42
Combine the factors, eliminating duplicates.
2 x 3 x 5 x 7 = 210, the LCM
30
15,2
5,3,2
42
21,2
7,3,2
Example: 30 and 42
Factor them.
2 x 3 x 5 = 30
2 x 3 x 7 = 42
Combine the factors, eliminating duplicates.
2 x 3 x 5 x 7 = 210, the LCM
The least common factor of any two numbers is one. You don't need a factor tree to tell you that.
Example: 30 and 42
Factor them.
2 x 3 x 5 = 30
2 x 3 x 7 = 42
Combine the factors, eliminating duplicates.
2 x 3 x 5 x 7 = 210, the LCM
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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 the least common multiple using prime factorization with factor trees?
Example: 30 and 42 30 15,2 5,3,2 42 21,2 7,3,2 Combine the factors, eliminating duplicates. 2 x 3 x 5 x 7 = 210, the LCM
What is the LCM of 81230 using continuous division?
Two or more numbers are needed to find their LCM
What is the answer LCM of 824 using lists of multiples?
At least two or more numbers are needed to find their LCM
What is the LCM of 50 using prime factorization?
You need at least two numbers to find an LCM no matter what you use.
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 12 6 and 3?
The LCM is 12.
Using the prime factor method to find the LCM of 4 and 5?
2 x 25Combine the factors.2 x 2 x 5 = 20, the LCM
How do you find 140 by using LCM?
Two or more numbers are needed to find the LCM
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.
Can you find the LCM with factor trees?
Yes. Consider 30 and 42. 42 21,2 7,3,2 30 15,2 5,3,2 Combine the factors, eliminating duplicates. 2 x 3 x 5 x 7 = 210, the LCM
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 the least common multiple using the greatest common factor?
Multiply the original two numbers. Divide that product by their GCF. The result is their LCM.
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.
How do you find the least common multiple using prime factorization with factor trees?
Example: 30 and 42 30 15,2 5,3,2 42 21,2 7,3,2 Combine the factors, eliminating duplicates. 2 x 3 x 5 x 7 = 210, the 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.
