how do you determine if a number is a prime or composite number? for example: is 15 a prime or...
TRANSCRIPT
How do you determine if a number is a prime or composite number?
For example:Is 15 a prime or composite number?
Core Lesson
A prime number has ONLY one set of factor pairs (1 and itself).
5:
1x5
9:
1x9
3x3
prime composite
In this lesson you have learned how to determine if a number is prime or composite by using
area models.
Extension Activities
Look at these numbers: 10, 11, and 12
Which ones are prime?
Which ones are composite?
Extension Activities
What other strategies can you use to find out if a number is prime or composite?