Prime and Composite Numbers

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)

Which is a PRIME number?

• 15

• 17

• 21

• 39

What is a number that has more than 2 factors or multiplication equations called?

• prime

• composite

• factor

• multiple

The only factors that prime numbers have are:

• 0 and 1

• 0 and itself

• 1 and itself

• 1

Match the following as Prime or Composite

• Composite

• 4

• Prime

• 19

• Composite

• 21

• Prime

• 15

• Composite

• 11

Which of the following numbers is a prime number?

• 15

• 21

• 29

• 35

Match the following

• Have more than 2 factors

• Composite Numbers

• 1

• The smallest prime number

• Only has 2 factors

  1 and itself

• Prime Numbers

• 2

• Is not prime or composite

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?

• prime

• 15

• composite

• 12

• composite

• 7

• prime

• 3

• composite

• 10

Is the number 51 prime or composite?

• Prime

• Composite