How do you find least common multiple?
How do you find least common multiple?
One way to find the least common multiple of two numbers is to first list the prime factors of each number. Then multiply each factor the greatest number of times it occurs in either number. If the same factor occurs more than once in both numbers, you multiply the factor the greatest number of times it occurs.
How do you find the GCF and LCM using a factor tree?
Step 1: Draw the factor trees for both numbers. Step 2: Write out the prime factorizations for each. Step 3: The GCF will be the prime factors that are common to both factorizations multiplied together. In this example, both factorizations have one 3 and one 5, therefore the GCF is 3 x 5 or 15.
What is the lowest common multiple of 20 13 and 10?
260
The least common multiple of 10, 20 and 13 is 260.
What is the GCF of 38 and 57?
19
GCF of 38 and 57 by Listing Common Factors There are 2 common factors of 38 and 57, that are 1 and 19. Therefore, the greatest common factor of 38 and 57 is 19.
What is the LCM of 20 45 and 75?
900
Calculate the LCM The least common multiple of 20, 45 and 75 is 900.
What is the LCM of 14 and 21?
42
Answer: LCM of 14 and 21 is 42.
What is the GCF of 20 30?
10
GCF of 20 and 30 by Listing Common Factors Therefore, the greatest common factor of 20 and 30 is 10.
What is the LCM of 5/8 and 3?
What is the LCM of 3, 5, and 8? The LCM of 3, 5, and 8 is 120. To find the least common multiple (LCM) of 3, 5, and 8, we need to find the multiples of 3, 5, and 8 (multiples of 3 = 3, 6, 9, 12 . . . . 120 . . . . ; multiples of 5 = 5, 10, 15, 20 . . . .
What is the LCM of 15 25 and 75?
Answer: LCM of 15, 25, 40, and 75 is 600.
How do you find LCM using factor tree?
The LCM, least common multiple, is the smallest value that two or more numbers multiply into. Let’s find the LCM of 120 and 45. Begin by using factor trees to write out each number’s prime factorization.
How do you calculate least common multiple?
One way to find the least common multiple of two numbers is to first list the prime factors of each number. Then multiply each factor the greatest number of times it occurs in either number. If the same factor occurs more than once in both numbers, you multiply the factor the greatest number of times it occurs.
How do you calculate factor tree?
Making a Factor Tree Write the number at the top of your paper. Find a pair of factors. Break down each set into its own factors. Repeat until you reach nothing but prime numbers. Identify all of the prime numbers. Write out the prime factor in equation form. Check your work.
How do you calculate LCM and GCF?
To find LCM multiply the factors in all three sections of the Venn Diagram 3 x 2 x 2 x 2 x 2 x 2 = 96 The LCM of 12 and 32 is 96 To find GCF multiply the factors in the center of the Venn Diagram 2 x 2 = 4 The GCF of 12 and 32 is 4. 5. Let’s Try Some! Use prime factorization to find LCM and GCF of 15 and 6.