GCF/LCM/PF

List all the factors for 27.

• 1, 27

• 1, 2, 13.5, 27

• 1, 3, 9,27

• 27, 54, 81.....

Tags

CCSS.4.OA.B.4

What are the first 4 multiples of 4?

• 1x4, 2x2

• 4, 8, 12, 16

• 1, 4, 8, 12, 16

Find the GCF for 8 and 20.

• 1

• 2

• 4

• 8

Find the GCF for 16 and 64.

• 16

• 4

• 8

• 20

Find the LCM for 12 and 9.

• 18

• 36

• 108

• 72

Find the LCM for 15 and 30.

• 15

• 5

• 30

• 10

What is the prime factorization for 42?

• 2x3x7

• 2+3+7

• 6x7

• 6+7

What is the prime factorization for 36?

• 6x6

• 2x3x2

• 2x3x2x2

• 2x3x3x2