Prime Composite and Factors

Which number is NOT a factor of 10?

• 1

• 2

• 3

• 5

Is 3 a factor of 12?

• yes

• no

Is 6 a factor of 24?

• Yes

• No

Composite numbers:

• Are always bigger than prime numbers

• Have more than 2 factors

• Have 2 pairs of factors

• Don't have factors

Which of these numbers is a prime number?

• 15

• 17

• 21

• 39

Four students each made a list of prime numbers.
Eric:   5, 7 17, 23
Maya:  3, 5, 13, 17
Bella:  2, 3, 17, 19
Joan:  7, 11, 13, 21
Who made an error and included a composite number?

• Eric

• Maya

• Bella

• Joan

I am a prime number between 30 and 40.  Which number could I be?

• 31

• 33

• 36

• 39

is 5 prime or composite?

• prime

• composite

Is 33 a prime or composite number?

• Prime

• Composite

Which of these numbers is a composite number?

• 37

• 41

• 21

• 29