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Prime Numbers

Prime Numbers. Some Simple Tips and Reminders. Definitions. Even Numbers – Any number that can be divided by 2 Odd Numbers – Any number that cannot be divided by 2 Composite Number – An integer that can be divided by at least one other number (a factor) other than itself. Definitions.

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Prime Numbers

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  1. Prime Numbers Some Simple Tips and Reminders

  2. Definitions • Even Numbers – Any number that can be divided by 2 • Odd Numbers – Any number that cannot be divided by 2 • Composite Number – An integer that can be divided by at least one other number (a factor) other than itself

  3. Definitions • Prime Number – An integer whose only factors are 1 and itself. • Factor – a number that can divide another number without a remainder. • Prime Factors – an expression of numbers that divides another integer without a remainder where all the factors are prime.

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

  5. Here’s How You Do It Take out the number 1 because it is a special number

  6. Here’s How You Do It Take out the number 1 because it is a special number

  7. Here’s How You Do It Take out numbers that have a composite factor of 2

  8. Here’s How You Do It Take out numbers that have a composite factor of 2

  9. Here’s How You Do It Take out numbers that have a composite factor of 3

  10. Here’s How You Do It Take out numbers that have a composite factor of 3

  11. Here’s How You Do It Take out numbers that have a composite factor of 5

  12. Here’s How You Do It Take out numbers that have a composite factor of 5

  13. Here’s How You Do It Take out numbers that have a composite factor of 7

  14. The PRIME Numbers! Take out numbers that have a composite factor of 7

  15. How Do We Know They Are Prime? • Composite numbers can be placed into varying types of rectangles • Prime numbers cannot • Let’s look at that…

  16. 15 24 Composite Numbers 6

  17. 17 29 7 Prime Numbers

  18. That’s It! • A prime number cannot be divided by anything other than 1 and itself.

  19. This powerpoint was kindly donated to www.worldofteaching.com http://www.worldofteaching.com is home to over a thousand powerpoints submitted by teachers. This is a completely free site and requires no registration. Please visit and I hope it will help in your teaching.

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