Mastering LCM Concepts

What is the LCM of 12 and 15?

• 75

• 45

• 60

• 30

Find the LCM of 8 and 14.

• 56

• 28

• 42

• 70

Calculate the LCM of 3, 4, and 5.

• 20

• 15

• 60

• 12

Use prime factorization to find the LCM of 18 and 24.

• 54

• 48

• 36

• 72

What is the LCM of 6, 9, and 12?

• 18

• 30

• 24

• 36

If two numbers are 20 and 30, what is their LCM?

• 70

• 60

• 50

• 90

Find the LCM of 5, 10, and 15 using prime factorization.

• 30

• 35

• 25

• 15

A gardener plants flowers every 12 days and shrubs every 18 days. When will they plant both on the same day?

• 48 days

• 36 days

• 24 days

• 30 days

What is the relationship between LCM and GCD?

• LCM(a, b) * GCD(a, b) = a * b

• LCM(a, b) + GCD(a, b) = a + b

• LCM(a, b) - GCD(a, b) = a - b

• LCM(a, b) / GCD(a, b) = a / b

If the LCM of two numbers is 36 and one of the numbers is 9, what could the other number be?

• 6

• 18

• 24

• 4 or 12