Calculating the Least Common Multiple (LCM)

Calculating the least common multiple: Find the LCM of 4 and 9.

• 25

• 13

• 36

• 42

What is the least common multiple (LCM) of 2 and 5?

• 2

• 10

• 20

• 7

What is the least common multiple (LCM) of 6 and 8?

• 6

• 8

• 48

• 24

The least common multiple of 12, 30, and 40 is…

• 40

• 60

• 120

• 160

Using prime factorization to find LCM: Use prime factorization to find the LCM of 12 and 15.

• 60

• 27

• 45

• 10

Using prime factorization to find LCM: Apply prime factorization to calculate the LCM of 8 and 10.

• 15

• 25

• 40

• 18

Applying LCM in real-life scenarios: If a bus comes every 15 minutes and a train comes every 20 minutes, how often do they both come at the same time?

• 60 minutes

• 30 minutes

• 35 minutes

• 45 minutes

Applying LCM in real-life scenarios: If a bakery sells bread every 3 days and cakes every 4 days, how often will they restock both items at the same time?

• 5 days

• 7 days

• 10 days

• 12 days

What is LCM?

• Least common multiple

• Least uncommon multiple

• Lowest common factor

• Highest common Multiple

What is the LCM for 4 and 7?

• 4

• 7

• 14

• 28