Prime and Composite

the only factors prime numbers have are:

• 0 and 1

• 0 and itself

• 1 and itself

• 1

Which list has only prime numbers?

• 2, 3, 4, 5

• 1, 5, 7, 9

• 2, 3, 5, 7

• 2, 4, 6, 8

Which list is only composite numbers?

• 1, 3, 4

• 2, 4, 6

• 4, 6, 8

• 5, 6, 8

Which list is only composite numbers?

• 1, 3, 4

• 2, 4, 6

• 4, 6, 8

• 5, 6, 8

True or False
0 is a COMPOSITE number.

• TRUE

• FALSE

Composite numbers:

• Are always bigger than prime numbers

• Have more than 2 factors

• Have 2 pairs of factors

• Don't have factors

Is 12 prime or composite?

• prime

• composite

Is 3 a factor of 12?

• yes

• no

Which of the following is a factor of 54?

• 4

• 7

• 5

• 9

Which number is a factor of 18

• 4

• 7

• 6

• 12