Review 7th Math

Find the prime factorization of 108

• 2³ * 3²

• 2² • 3³

• 2⁵ • 3

• 2 • 3 • 7 • 11

Find the prime factorization of 420

• 2² • 3 • 5 • 7

• 7⁷

• 2² • 3 • 11

• 2³ • 3 • 7

What is the greatest common factor of 60 and 84

• 2

• 6

• 12

• 24

What number has the prime factorization of 2³ • 3² • 5?

• 360

• 720

• 180

• 240

Select all of the prime numbers.

• 0

• 19

• 31

• 47

• 51

28 is a _______________ number

• prime

• composite

All odd numbers are prime

• True

• False

All even numbers are composite

• True

• False

2 is the only even prime number

• True

• False

What is the LCM of 2, 4, and 9?

• 18
• 36
• 27
• 40