Prime and Composite Number

How is a prime number different from a composite number?

• Prime numbers are smaller than composite numbers.

• Composite numbers are larger than prime numbers.

• All odd numbers are prime numbers.

• Prime numbers have only 2 factors, and composite numbers have more than 2 factors.

Which one is a prime number?

• 465

• 822

• 600

• 743

Which one is prime?

• 100

• 455

• 71

• 182

Which number below is NOT prime?

• 2

• 11

• 13

• 18

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

• composite

• prime

• more than 1 factor pair

• exactly 1 factor pair

The number 17 is ​ (a)   because it has ​ (b)  

• prime

• composite

• exactly 1 factor pair

• more than 1 factor pair

The number 25 is ​ (a)   because it has ​ (b)  

• composite

• prime

• more than 2 factors

• exactly 2 factors

Sort the numbers

*Hint: use your prime numbers chart!

• 19

• Neither Prime nor Composite

• 24

• Prime Number

• 0

• Composite Number

Match the following

• Have more than 2 factors

• Composite Numbers

• 1

• The smallest prime number

• Only has 2 factors

  1 and itself

• Is not prime or composite

• 2

• Prime Numbers

Are each of these numbers prime or composite?

• composite

• 12

• composite

• 7

• composite

• 3

• prime

• 10

• prime

• 15