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AJ’s PT #…… 27 By: AJAY HARIDAS

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Factors of 27 There are only two factor pairs for the number 27. These factor pairs are….. 1 27 9 3 Are there a couple of ‘and’s in there? :-)

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54 Multiples of 27 27 Usually multiples of a number can go on forever. These are some of multiples for 27, 27, 54, 81, 108, 135, 162, 189, 216, 243, 270, 297, 324. 189 297 108

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**Mathematical Facts about 27**

Twenty- seven is an odd number Twenty-seven is the 14th number of the odd number cycle The sum of the 7th odd number and the 7th even number is twenty-seven. (13+14=27) The product of 2nd and 5th odd numbers is 27 (3x9=27) If you add up all the numbers from 2 to 7, you will get 27! ( =27) Twenty-seven is not an abundant number because all its factors doesn’t add up to itself Twenty-seven is a deficient number because it adds up to less than itself The number 27 is not a perfect number because all its proper factors doesn’t add up to itself. The # 27 is not a near-perfect number because the sum of the factors are no where near close to itself. “don’t” not “doesn’t”; … deficient … “its factors” not “it”; proper factors, odd/even, prime/composite; factor/product games?? x = +

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27 Facts about 27 In the U.S., there is a street in New York called, 27th street. A size of a natural tennis court is 78 feet long and 27 feet wide. There are 27 books in the New Testament of the Bible. The primitive Greek alphabet had 27 letters. There are 27 letters in the Spanish Alphabet. Normal not natural

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Facts about 27 27 In a human body, the hand consists of exactly twenty-seven bones in it In the United States there are more than 28 presidents. The 27th president of the United States of America was William Howard Taft ( ). Twenty-seven is important in baseball, commonly played in the U.S. In baseball there was a famous legend that played for the Boston Red Sox. His name was Carlton Fisk. Carlton used to have jersey with the number 27. The colored balls in snooker have a total value of 27. In U.S., Florida was the 27th union to be created (March ). First fact omit “in it”; 2nd fact “have been” not “are”; a jersey 27 27

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Prime Factorization 3 There is only one prime factorization for a number The prime factorization for 27 is: 3 x 3 x 3 or in exponents it is 3 to the 3 power of 3 27 27 3

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27 Why I chose 27 I chose 27 because it is one date away from my birthday which is the 28th. To be precise, my birthday is 28th June. It is on the 27th that I am very excited. I also chose it because I like odd numbers more than even numbers. Twenty-seven is important to me because it gives a lot of luck and because I really, really like it. These are the reasons I chose 27 as my special number. 27 27th....28th

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The Quiz Give two reasons why I chose the number 27 as my special number. a.) One day before my birthday. b.) I like odd numbers more than even numbers c.) It gives me lot of luck Give three facts of the number 27. a.) Twenty-seven is the 14th number of the odd number cycle. The sum of the 7th odd number and the 7th even number is twenty-seven. (13+14=27) b.) Twenty-seven is important in baseball, commonly played in the U.S. In baseball there was a famous legend that played for the Boston Red Sox. His name was Carlton Fisk. Carlton used to have jersey with the number 27. c.) In a human body, the hand consists of exactly twenty-seven bones in it What is the Prime Factorization for 27? a.) 3 x 3 x 3 Give three multiples and one factor pair for 27. Multiples: 27, 54, 81, 108, 135, 162, 189, 216, 243, 270, 297, 324. Factor pairs: 1, 27, 3, 9

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**Presentation Director: AJ**

THANK YOU THANK YOU!!! What a marvellous amount of information, Ajay!! Well done! Important for the future that you keep checking the wiki for checklist and mark scheme. Some vocab missing - well done with explanations, though! Edit for the wiki, OK? 17/20 Presentation Director: AJ Idea of Special #: Ms. Maggie

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