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Prime and Composite

Prime and Composite

Author: Rachel Casto

I can define prime and composite.

I can determine if a number is prime or composite by finding its factors.

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Key Vocabulary

prime number-a whole number that can be divided evenly by only 1 and itself; only has 2 factors (1 and itself); only has one factor pair (1, itself) (Example: 7 is a PRIME number because it only has the factors of 1 and 7)

composite number-a whole number that can be divided evenly by numbers other than 1 and itself; has more than 2 factors; has more than one factor pair (Example: 21 is a COMPOSITE number because it has the factors of 1, 21, 3, and 7)

**0 and 1 are neither prime nor composite

Below you will find resources to help students determine if a number is prime and composite.

Determine Prime or Composite Using Area Models
(Source:  Learn Zillion)

Prime and Composite Numbers
(Source:  StudyJams)

Recognizing a Prime Number
(Source:  Khan Academy)



Composite Maze