Prime Composite

List all the prime numbers between 1-20

Is 37 prime or composite?

• Prime

• Compsite

is 27 Prime or composite?

• Prime

• Composite

is 39 prime or composite?

• Prime

• Composite

A _____________________________ is a number who's only factors are 1 and itself.

A prime number is:

• A number that is made only by multiplying 1 and itself.

• An odd number.

• A popular number.

• The least common multiple of two 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)

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

• prime

• composite

• exactly 2 factors

• more than 2 factors

Prime numbers have:

• Exactly 2 factors

• 2 pairs of factors

• More than 2 factors

• 1 factor

Which is true about ALL prime numbers.

• They are all even.

• They are all odd.

• They have exactly two factors.

• They do not have any factors.