GCF/LCM

Find the greatest common factor of 20 and 30

• 2
• 10
• 5
• 15

The Greatest Common Factor of two prime numbers is

• 1
• There are no common factors.
• 0
• Themselves

What is the GCF of 8 and 10?

• 1
• 4
• 3
• 2

What does GCF stand for?

• Great Change Factors
• Greatest Common Showman
• Greatest Common Factor
• Grandest Combined Factor

How do you find the multiples of a number?

• Use division to find out what you multiply to make a multiple.
• Write down how many times that number appears in a multiplication table/chart.
• Use my multiplication facts and write them out.

What is the LCM of 2, 4, 6?

• 4
• 12
• 6
• 2

Is 348 divisible by 2?

• Yes
• No

What are the factors of 12?

• 12, 24, 36, 48, 60
• 1, 2, 3, 4, 6, 12
• 2, 4, 6, 8, 12
• 1, 12

Tags

CCSS.4.OA.B.4

Is 786 divisible by 3?

• Yes
• No

Tags

CCSS.4.OA.B.4

What is the LCM of 33 and 74?

• 1
• 33
• 74
• 2442