Factors and Multiples

A prime number is...

• a number that has only one factor.
• a number that has at least two factors.
• a number that has more than two factors.
• a number that has exactly two factors, 1 and itself.

2 x 2 x 2 is the prime factorization of:

• 6
• 12
• 22
• 8

Which of the following expressions shows 12 as a product of its prime factors? 

• 2 x 6
• 2 + 2 + 2 + 2 + 2 + 2 
• 2 x 2 x 3
• 1 x 2 x 2 x 3

Which set of numbers show all the factors for 15?

• 7, 8
• 1, 15
• 1, 3, 5, 15
• 3, 5, 15

14, 49, and 28 are all multiples of what number?

• 2
• 7
• 4
• 5

Tags

CCSS.4.OA.B.4

Which number is a multiple of 5?

• 16
• 29
• 40
• 32

Which answer choice lists all the factors for 27?

• 3, 9
• 1, 3, 9, 27
• 1, 3, 6, 9, 12, 27
• 1, 3, 6, 9, 18, 27

Which number is a multiple of 5?

• 16
• 29
• 40
• 32