Prime and Composite Numbers

5.4A Prime and Composite Numbers

Multiple Choice

DO NOW

There are 5 teachers in each of the 4 grade levels of Wiley Elementary. Each teacher received the same number of raffle tickets to sell. The 1,100 tickets cost $8 a piece. The principal wrote the expression shown to determine how much money each teacher will turn in if all the tickets are sold.

$8 × 1,100 ÷ 4 ÷ 5

How much money will each teacher give to the principal if each class sells all of their raffle tickets?

• A. $8800

• B. $440

• C. $2200

• D. $90

Things to Remember

• 0 and 1 are neither prime nor composite.

• 2 is the ONLY even prime number. All other evens are composite.

• There are only 25 prime numbers between 0-100

• 2, 3, 5, 7, 11

• 13, 17, 19, 23, 29

• 31, 37, 41, 43, 47

• 53, 59, 61, 67, 71, 73, 79, 83, 89, 97

Multiple Choice

• MELODY

• TANISHA

• AMANDA

• NADIA

Multiple Choice

• 16 is prime, because it has ONLY two factors, one and itself.

• 16 is prime, because it has MORE THAN two factors, one and itself.
  

• 16 is composite, because it has ONLY two factors, one and itself.

• 16 is composite, because it has MORE THAN two factors, one and itself.

Multiple Choice

• 5 is prime, because it has ONLY two factors, one and itself.

• 5 is prime, because it has MORE THAN two factors, one and itself.

• 5 is composite, because it has ONLY two factors, one and itself.

• 5 is composite, because it has MORE THAN two factors, one and itself.

Multiple Choice

• they are both prime because they only have two factors, one and itself.

• they are both composite, because they have MORE THAN two factors

• 21 is composite because it has more than two factors. 37 is prime because it just has two variables, one and itself.

• They are neither prime nor composite.

Multiple Choice

• The number 17 is composite and the number 19 is prime.

• The number 17 is prime and the number 19 is composite.

• The numbers 17 and 19 are both prime.

• The numbers 17 and 19 are both composite.