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Math Literacy: Mathematical Concepts 2 x 3 Matrix w/Conclusions TM Makes Sense Sense Strategies Strategies Makes MENU © 2007 Edwin Ellis, All Rights Reserved Published by Makes Sense Strategies, LLC, Lillian, AL www.MakesSenseStrategies.com sample Date: Definition Main ideas Features Examples Features Conclusion Prime Numbers There are only two factors (numbers) that can evenly divide into this number. 2, 3, 5, 7, 29… These are not just odd numbers. For example the number 21 is odd, but is not prime because 1, 3, 7, and 21 can divide evenly into 21. Composite Numbers More than two factors (numbers) that can evenly divide into this number. 4, 6, 25, 33… These are more common among the numbers. For example the number 35 is composite because 1, 5, 7, and 35 can divide evenly into 35. EXCEPTIONS Numbers that are neither prime nor composite. 0 and 1 These are the only two exceptions to the rules of prime and composite numbers. So what? What is important to understand about this? It is important to realize that a number being even or odd does not make the number Prime or Composite. What makes the number Prime or Composite is the ability of other factors (numbers) to divide EVENLY into the number in question.