Composite vs. Prime

which list below has only composite numbers?

• 2, 4, 6

• 3, 5, 7

• 4, 6, 8

• 10, 5, 3

Is 15 a composite number?

• NO

• YES

Why is 16 a composite number? Pick two reasons.

• 16 is composite because it is even.

• 16 is composite because it is bigger than 10.

• 16 is composite because it has more than one factor pair.

Which list has both prime and composite numbers?

• 25, 10, 3, 7

• 10, 20, 30, 40

• 2, 3, 17, 13

• 16, 18, 26, 32

Is 16 Prime or Composite

• Prime

• Composite

Is 11 Prime or Composite?

• Prime

• Composite

Which number below is NOT prime?

• 2

• 11

• 13

• 18

Match the following

• 2

• Is not prime or composite

• Only has 2 factors

  1 and itself

• The smallest prime number

• Have more than 2 factors

• Composite Numbers

• 1

• Prime Numbers

The number 21 is ​ (a)   because it has ​ (b)  

• composite

• prime

• more than 1 factor pair

• exactly 1 factor pair

All of these are prime except

• 3

• 9

• 2

• 13