GCF and LCM

What are the factors of 25?

• 1, 2, 3, 5, 10, 15, 25

• 1, 5, 25

• 1, 25

• 1, 5

Answer explanation

Tags

CCSS.4.OA.B.4

Find the greatest common factor of 20 and 30

• 2

• 5

• 10

• 15

Answer explanation

The Greatest Common Factor of two prime numbers is

• 0

• 1

• There are no common factors.

• Themselves.

Answer explanation

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

How do you find the multiples of a number?

• Use division to find out what you multiply to make a multiple.

• Use my multiplication facts and write them out.

• Write down how many times that number appears in a multiplication table/chart.

Ap- What is the LCM of 2, 4, 6?

• 6

• 12

• 4

• 2

A prime number is:

• A number that is made only by multiplying 1 and itself.

• An odd number.

• A popular number.

• The least common multiple of two numbers.

Tags

CCSS.4.OA.B.4

What is the difference between GCF and LCM?

• one is for the multiples and the other is for factors
• they are spelled differently

Factors of 24

• 24= 1,2,3,4,5,6,12,24

• 24=1,2,3,4,6,8,12,24

• 24=2,4,6,8,12,24

Tags

CCSS.4.OA.B.4