LCM GCF Prime Factorization Fractions

• 4
• 12

What is the LCM of 10, 20, and 25?

• 5

• 20

• 100

• 200

What is the prime factorization of 135?

What is the GCF of 27 and 45?

• 1215

• 45

• 27

• 9

Use a factor tree or repeated division of primes to get the prime factorization of 24.

• 2X2X2X2

• 2X2X2X3

• 4X6

• 3X8

Write the prime factorization of 100.

• 5x5x4

• 2x3x5x7

• 2x2x5x5

• none of the above

Write the prime factorization of 44.

• 2x11

• 11x4

• 2x22

• 2x2x11

Find the greatest common factor of 42,72.

• 9

• 7

• 6

• 2

Find the greatest common factor of 10 and 22.

• 2

• 4

• 11

• 5

Find the least common 
MULTIPLE OR LCM OF 
22, 36.

• 36

• 2

• 792

• 396