Finding the Least Common Multiple in Algebra

What is the least common multiple (LCM) of 8 and 12?

• 32

• 36

• 24

• 16

Which of the following is a correct prime factorization of 42?

• 2 * 3 * 7

• 6 * 7

• 2 * 21

• 3 * 14

When finding the LCM using prime factorization, what should you do with the factors?

• Use each factor the least number of times it appears in any number

• Use each factor the greatest number of times it appears in any number

• Ignore the factors

• Use each factor exactly once

What is the LCM of 14, 16, and 42?

• 168

• 224

• 336

• 504

Tags

CCSS.4.OA.B.4

Which of the following is the prime factorization of 17?

• 1 * 17

• 17 * 1

• 17

• 2 * 8.5

Tags

CCSS.4.OA.B.4

How many times is the factor 2 used in the prime factorization of 16?

• 2

• 5

• 3

• 4

How should you write the expression c^2 when finding the LCM with variables?

• c * c

• c^2

• 2c

• c + c

What is the LCM of 6c^2d^2 and 15c^5d^2?

• 15c^5d^2

• 6c^5d^2

• 30c^5d^2

• 30c^2d^2

What is the LCM of 4k^4p^3n^2, 5k^2p^3, and 20k^2n^4?

• 20k^4p^3n^2

• 10k^4p^3n^4

• 20k^2p^3n^4

• 20k^4p^3n^4

Which of the following is NOT a step in finding the LCM of expressions with variables?

• Multiply all the factors together

• Use each factor the greatest number of times it appears

• Add all the factors together

• Write each expression as a product of prime factors