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Prime Numbers

Prime Numbers. Some Simple Tips and Reminders. Prime Number – A number whose only factors are 1 and itself. Composite Number – A number with more than two factors. Let’s start with a number grid from 1 to 100 and see how they were discovered. What numbers are prime?.

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Prime Numbers

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  1. Prime Numbers Some Simple Tips and Reminders

  2. Prime Number – A number whose only factors are 1 and itself.

  3. Composite Number – A number with more than two factors.

  4. Let’s start with a number grid from 1 to 100 and see how they were discovered. What numbers are prime?

  5. Cross out the number 1 because it is a special number Here’s How You find the primes

  6. Cross out the number 1 because it is a special number-UNIQUE! It only has 1 factor, itself! Here’s How You Find the Primes

  7. Circle the number 2, it is the smallest prime number. Cross out numbers that have a composite multiple of 2. Circle the number 2: It is the smallest prime number and the only Even Prime

  8. Cross out numbers that have a composite multiple of 2 Cross out multiples of 2:

  9. Cross out numbers that have a composite multiple of 3 3 is the next prime number: Circle 3!

  10. Cross out numbers that have a composite multiple of 3 3 is the next prime number: Circle 3!

  11. Cross out numbers that have a composite multiple of 5 5 is the next prime number; Circle 5!

  12. Cross out numbers that have a composite multiple of 5 5 is the next prime number; circle 5!

  13. 7 is the next prime number; circle 7 Cross out numbers that have a composite multiple of 7

  14. Take out numbers that have a composite multiple of 7 The PRIME Numbers 1-100!

  15. Prime Numbers Explained https://www.khanacademy.org/math/pre-algebra/pre-algebra-factors-multiples/pre-algebra-prime-numbers/v/prime-numbers • Prime Numbers Rap https://www.youtube.com/watch?v=cRz4hW9SPPc • Twin Prime Conjecture Song https://www.youtube.com/watch?v=DSpKiJyJ9NI

  16. Can you find the Primes 101-200?Check with me when you think you have them all. 

  17. Try some games: • Primes vs. Composites http://www.xpmath.com/forums/arcade.php?do=play&gameid=101 • King Kong’s Prime Numbers http://www.xpmath.com/forums/arcade.php?do=play&gameid=60 • Number Ninja~Prime Numbers http://www.abcya.com/number_ninja_factors.htm • Fruit Splat http://www.sheppardsoftware.com/mathgames/numbers/fruit_shoot_prime.htm • Monkey Drive http://www.sheppardsoftware.com/mathgames/monkeydrive/numbers/MDPrimeNumbers.htm

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