LCM/GCF/HCF

Write the number 18 as a product of its prime factors.

• 2 × 9
• 3 × 6
• 2² × 3

• 2 × 3²

Find the prime factorization of 12 ?

• 2 x 6

• 2 + 2 + 2 + 2 + 2 + 2

• 2² x 3

• 1 x 2² x 3

Find the prime factorization of 16 ?

• 1 x 16

• 2²x 4

• 2⁴

• 2² + 2²

Find the prime factorization for 80

• 4² x 5

• 2⁴ x 5

• 2 x 2 x 2 x 10

• 8 x 5 x 2

Find the prime factorization of 72

• 2³ x 3²

• 2 x 3² x 4

• 2⁴ x 3³

• 2² x 6²

Write 54 as a product of its prime factors.

• 2x2x3x3
• 2x3x3x3
• 2x3x9
• 6x9

LCM of 3 and 5 is...

• 1

• 3

• 5

• 15

What is the missing factor?

• 3

• 5

• 6

• 7

What is the LCM for 4 and 7?

• 4
• 7
• 14
• 28

Find the LCM of 45 and 30

• 90
• 120
• 60
• 75