Prime Time Practice Wildcats

Which of the following is the product of primes for 120?

• 2² x 3² x 5

• 2² x 3 x 5

• 2³ x 3² x 5

• 2³ x 3 x 5

What is the product of primes for 250?

• 5³

• 2 x 5³

• 2² x 5²

• 2³ x 5

Simplify the following: 2³ x 3 x 7

Simplify the following: 3² x 5² x 2

I am thinking of a number less than 180. 15, 20 and 30 are all factors. The digits add to 6. What is the number?

I am thinking of a number between 20 and 40 that has exactly 4 factors and the sum of the digits is 11. What is the number?

What is the GCF of 40 and 60?

• 5

• 10

• 15

• 20

What is the GCF of 80 and 96?

The common prime factors of 30 and 45 are:

• 3 and 5

• 3² and 5

• 2, 3 and 5

• 5

Which of the following is a common multiple of 12 and 15?

• 3

• 30

• 45

• 60