Prime and composite | Baamboozle - Baamboozle | The Most Fun Classroom Games!

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Determine the prime factorization of 15

3 x 5

Is 19 prime or composite?

prime

Which are prime and which are composite? 18, 22, 31

composite: 18, 22 prime: 31

True or false: all odd numbers are prime

false

What is the prime factorization of 28?

2 x 2 x 7

Which are prime and which are composite? 17, 7, 24

Composite: 24 prime: 7, 17

How many factors does a prime number have?

2

Draw an array model to prove this number is prime or composite: 13

prime: 1 x 13

How many factors does a composite number have?

More than 2

Draw an array model to prove this number is prime or composite: 9

Composite: 1 x 9 3 x 3

True or false: All even numbers are composite

True

is 45 prime or composite?

composite

What is the prime factorization of 72?

2 x 2 x 2 x 3 x 3

Determine the prime factorization of 21

3 x 7