Factors, Multiples, Prime and Composite

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 only two factors.

  (1 and itself)

Select all of the prime numbers.

• 2

• 11

• 13

• 9

• 15

Numbers that can be multiplied together to make a product are called _____.

• multiples

• sum

• factors

• facts

Select all of the correct factor pairs of 48.

• x 48

• 2 x 25

• 3 x 16

• 6 x 8

• 4 x 15

The number ​ (a)   is the only even prime number because it has ​ (b)  

• 2

• 4

• 1

• exactly one factor pair

• more than 2 factors

• exactly 1 factor

Chuck made some arrays to show the factors of his mystery number. Rico made some arrays to show the factors of his mystery number. Which statement about the boys' mystery numbers is true?

• Both boys had composite mystery numbers.

• Chuck had a composite mystery number, and Rico had a prime mystery number.

• Chuck had a prime mystery number, and Rico had a composite mystery number.

• Both boys had prime mystery numbers.

The number 17 is ​ (a)   because it has ​ (b)  

• prime

• composite

• exactly 1 factor pair

• more than 1 factor pair

The number 25 is ​ (a)   because it has ​ (b)  

• composite

• prime

• more than 2 factors

• exactly 2 factors

The number 11 is​ (a)   because it has ​ (b)  

• prime

• composite

• exactly 2 factors

• more than 2 factors

Are each of these numbers prime or composite?

• composite

• 12

• composite

• 10

• prime

• 15

• prime

• 7

• composite

• 3