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My Special Number

My Special Number. 60. Roll over. Afrin 12/10/2007. My Special Number. My special number is 60. Why I chose this number…. It is my lucky number. It has a factor(5), that is the number of letters in my name A F R I N. My grandmother is 60 years old.

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My Special Number

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  1. My Special Number 60 Roll over Afrin 12/10/2007

  2. My Special Number My special number is 60 Why I chose this number…. • It is my lucky number. • It has a factor(5), that is the number of letters in my name A F R I N. • My grandmother is 60 years old. • I am 10 years old, and my cousin sister is 6 years old, 10x6=60.

  3. My Special Number Mathematical facts about my number- • Factors -1,2,3,4,5,6,10,12,15,20,30,60, because all of these numbers divide evenly into 60. • Product of :60x1=60, 30x2=60, 20x3=60, 15x4=60, 10x6, 12x5 • Proper Factors-1,2,3,4,5,6,10,12,15,20,30, because these are all the factors of 60 except for the number itself.

  4. My Special Number • Divisors-1,2,3,4,5,6,10,12,15,20,30,60, because all of these numbers divide evenly into 60 (60x1) (60x2) (60x3) (60x4 ) (60x5) (60x6) ( 60x7) (60x8) (60x9 ) (60x10) • Multiples: 60,120,180,240,300,360,420,480,540,600 • Divisible by-1,2,3,4,5,6,10,12,15,20,30,60, because 60 can be divided evenly by these numbers • 60 is a composite number because 60 has more than 2 factors. • 60 is an abundant number, because all the proper factors of 60 add up to more than 60. 1+2+3+4+5+10+5+20+30=108>60

  5. My Special Number • 60 is not a square number, because the square root of 60 is not a whole number-(7.74596….) • Sum of (numbers when added together make 60) 59+1=60, 58+2=60…etc. • Difference between (numbers when subtracted by each other, make 60) 90 and 30 is 60, 85-25=60, 70-10=60….etc. • Prime Factorization-2x2x3x5=60

  6. My Special Number • Remainder- 60 divided by 7=8 – Remainder is 4. Similarly 60 divided by 9=6 – remainder is four. etc. • Quotient of: 180 divided 3 = quotient is 60, 240 divided by 4 = quotient is 60. • Dividend: eg. 60 divided by 4 =15, here, 60 is the dividend. • Being ten times a perfect number(6), 60 is a semiperfect number. Click here

  7. My Special Number Dimensons of a rectangle are the lengths of its sides. For example- 6x10=60 6 10

  8. My Special Number Mathematical Reflections 1- • I’ve learned that none of 1,2,3,4,5,6,7,8 or 9,(on the factor list, in the product game) can be multiplied by each other to get my special number, 60. I found out by factor pairs (in this case, none of the factor pairs of 60 can be made with the numbers on the factor list). • My number would not be a good first move in either of the games (factor and product game) because in the factor game, there isn’t a 60 on the board, and even if there was a 60, it wouldn’t have been a good move because it is an abundant number, so you get 60, but the opponent gets 108. 108>60. And in the product game, none of the factors can be multiplied by each other to get 60, therefore 60 can’t be on the board.

  9. My Special Number Mathematical Reflections 2- • My number has 6 factor pairs-1x60, 2x30, 3x20, 4x15, 5x12, 6x10 • My number is an even number, because 60 has 2 as a factor. (2 goes evenly into 60, 30 times). • 60 is not a square No. because if we make a rectangle for 60, the tiles will not be able to form a square. Secondly the square root of 60 is not a whole number.

  10. My Special Number Mathematical Reflections 3- • The least common multiple of 20 and 30 is 60, because Multiples of 20=20,40,60,80,100,120..etc.Multiples of 30=30,60,90,120,150..etc. LCM=60. LCM of 15 and 20 is 60, because Multiples of 15= 15,30,45,60,75…. Multiples of 20= 20,40,60,80,100….LCM=60 • The Greatest common Factor of 120 and 180 is 60, because Factors of 120:1,2,3,4,5,6,10,12,15,20,30,60,120. Factors of 180:1,2,3,4,5,6,9,10,15,20,30, 60,90,180. GCF=60. Similarly GCF of 240 and 300 is 60, because Factors of 240:1,2,3,4,5,6,8,10,12,15,20,30,60,120,240. Factors of 300:1,2,3,4,5,6,10,15,20,30,50,60,75,100,150,300. GCF=60.

  11. My Special Number Mathematical Reflections 4- • The prime factorization of 60 is 2x2x3x5, because this is the unique string of prime factors resulting to (product) 60. • Exponent of the prime factorization of 60:22x3x5 • 60 and 61 are relatively prime, because their GCF is 1.

  12. My Special Number Connections- Fun Facts: Crocodiles lay 60 eggs and incubate them for 60 days! A flower named Bambey Rose has approximately 60 petals! There are 60 species of moss in Antarctica The average depth of the Irish Sea is 60 meters Daily life: 60 seconds in one minute 60 minutes in one hour

  13. My Special Number Cultural : • There are five elements and twelve animals in the Japanese cycle of life combining to make a 60 year cycle. • Chinese astrologers use a 60 year cycle and lunar calendar • 60th anniversary is supposed to be a diamond anniversary Historical: The ancient Babylonians used a base 60 number system.

  14. My Special Number Extra Facts- 60 is the: • 30th even number • Product of 2nd and 15th even numbers(2x30) is 60 • Smallest number with 12 different factors • Smallest number divisible by 1 through 6 • 5 dozen equals to 60 • sum of a pair of twin primes (29 + 31) • 3 interior angles of an equilateral triangle each measure 60 degrees

  15. My Special Number Quiz Time! Please remember to click to go to the next slide from now on. Boo!

  16. Question # 1 1.What are the factors of 60? • a.)1,2,3,4,5,6,10,12,15,20,30,60 • b.)1,2,3,4,6,10,12,15,20,30,60 • C.)1,2,3,4,5,6,10,12,14,15,20,30,60 Answer: A. 1,2,3,4,5,6,10,12,15,20,30,and 60, are all factors of 60, because all of these numbers divide evenly into 60.

  17. Question # 2 2.Is 60 an Abundant, Deficient or Perfect number? a.)60 is a Perfect number b.)60 is an Abundant number. c.)60 is a Deficient number. Answer: B. 60 is an abundant number because all the proper factors of 60 add up to more than 60.

  18. Question # 3 3.60th anniversary is supposed to be a …. Anniversary a.) 60th anniversary is supposed to be a diamond anniversary. b.)60th anniversary is supposed to be a gold anniversary. C.)60th anniversary is supposed to be a ruby anniversary. Answer: A. The 60th anniversary is supposed to be a diamond anniversary.

  19. Question # 4 4.Is 60 a good first move in the product game? a) No, because none of the factors on the factor list can be multiplied by each other to get 60. b) Yes , because some of the factors on the factor list can be multiplied by each other to get 60. Answer: A. None of the factors on the factor list can be multiplied by each other to get 60.

  20. Question # 5 5. Give the two connections number 60 has in daily life. a) 60 minutes in one hour. b) 60 seconds in one minute. c) Both of above Answer: C. Both, “60 minutes in one hour” and “60 seconds in one minute” are correct, as well as relate to daily lives.

  21. THANK YOU!

  22. Links I used • http://en.wikipedia.org/wiki/60_(number) • http://www.wisdomportal.com/Numbers/60.html • http://www.virtuescience.com/60.html Glossary Link- • http://www.teachers.ash.org.au/jeather/maths/dictionary.html

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