GCF and LCM

Find the LCM of 12 and 6. 

• 6
• 12
• 2
• 1

51 is a _____________ of 3

• Factor 
• Multiple

What is the least common multiple (LCM) of 4 and 10?

• 4
• 40
• 15
• 20

What is the GCF OF 24 and 48?

• 52
• 58
• 24
• 48

Two neon signs are turned on at the same time. Both signs blink as they are turned on. One sign blinks every 9 seconds. The other sign blinks every 15 seconds. In how many seconds will they blink together again?

• 48 seconds
• 45 seconds
• 16 seconds
• 8 seconds

What number is a factor for EVERY number?

• 0
• 1
• 2
• 100

What is the GCF of 8 and 10?

• 1

• 3

• 4

• 2

What does GCF stand for?

• Great Change Factors

• Greatest Common Factor

• Greatest Common Showman

• Grandest Combined Factor

Which is a factor of 15?

• 2

• 3

• 4

• 6

What is the GCF of 4 and 12?

• 3
• 1
• 6
• 4