Prime, Composite and Triangular Numbers.

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Presentation transcript:

Prime, Composite and Triangular Numbers.

Prime Numbers Watch the video below

Prime Numbers 1: In your book, write a definition of prime number. 2: Find 5 prime numbers that are not in the videos. 3: Sort the numbers below as prime or composite numbers 7, 9, 12, 17, 19, 21, 25, 27, 30, 31, 33

Challenges to follow…. get excited Challenges to follow…..get excited!!!! Ask your teacher if you should have a go at these.

http://nrich.maths.org/public/leg.php?code=9

http://nrich.maths.org/public/leg.php?code=9

http://nrich.maths.org/public/leg.php?code=9