GCF and LCM

GCF and LCM

Mrs. Montagna

​Review of multiples and factors

Multiple Choice

4. List the first 5 MULTIPLES of 3

• 3, 6 10, 15, 20

• 1, 3, 2, 6, 4

• 3, 6, 9, 12, 15

• 6, 9, 12, 15, 18

Multiple Choice

When we skip count, we are listing .....

• 6, 9, 12, 15, 18

  multiples

• 3, 6 10, 15, 20

  factors

• 1, 3, 2, 6, 4

  divisors 

• 3, 6, 9, 12, 15

  addition 

Multiple Choice

Which lists all the factors of 20?

• 1, 2, 10, 20

• 1, 2, 5, 10, 20

• 1, 4, 5, 20

• 1, 2, 4, 5, 10, 20

​Finding GCF and LCM

Multiple Choice

The greatest number that is a factor of two or more numbers.

• LCM

• GCM

• LCF

• GCF

Multiple Choice

What is the GCF of 12 and 15

• 6

• 3

• 1

• 5

Multiple Choice

What is the LCM of 4 and 6

• 24

• 2

• 1

• 12