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My Special Number Project Name: ___________ Block: ____ Special Number: Introducing My Special Number _____. My Special Number is 12. Why? I chose my special number to be 12 because it is my favorite number. 2 My Special Number real world connections. 12 inches in 1foot 12 men walked on the moon. “L" is the 12th letter of the alphabet. 12 hours on a clock. There are 12 grades in elementary and high school. Terry Bradshaw from the Steelers wore #12. 3 My Special Number and the Factor Game. 12 would be a good number to start the factor and multiple game off with. See the role play below. Me: 12 Opponent: 1 2 3 4 6 24 36 48 60 72 84 96 NO MOVE 4 My Special Number: Prime or Composite. Prime numbers are numbers that have two factors; 1 and itself. Composite numbers are numbers that have more than two factors. My Special Number (12) is composite because it has more than 2 factors. 5 My Special Number: “Divisible By and Products.” The number 12 is divisible by 2 because it is even. The product of 2 and 6 is 12. 6 My Special Number: “Divisible By and Products.” Factors are numbers that are be multiplied together. A factor is a smaller number that can be divided exactly into a larger number. 1, 2, 3, 4, 6, 12 1, 12 2, 6 3, 4 7 My Special Number: Odd or Even. A number is even if it ends in 0, 2, 4, 6, or 8. Even numbers are always divisible by 2. A number is odd if it is not divisible by 2. Odd numbers end in 1, 3, 5, 7, or 9. My special number is even because 2 is a factor. 8 My Special Number’s Common Factors with the number _____. If two numbers have common factors, the factor can be divided evenly into each number. Factors of 12: 1, 2, 3, 4, 6, 12 Factors of 24: 1, 2, 3, 4, 6, 8, 12, 24 The common factors of 12 and 24 are 1, 2, 3, 4, 6, and 12. The greatest common factor (GCF) of 12 and 24 is 12. 9 My Special Number’s First 10 Multiples. Multiples are formed when you multiply a number by other numbers. 12, 24, 36, 48, 60, 72, 84, 96, 108, 120 12 x 2 10 My Special Number’s Common Multiples with the number _____. Common multiples are multiples shared by two or more numbers Below are common multiples… 12: 12, 24, 36, 48, 60, 72, 84, 96, 108, 120 24: 24, 48, 72, 96, 120, 144, 168, 192, 216, 240 The least common multiple (LCM) for 12 and 24 is 24. 11 My Special Number: square or not square. My special number is not a perfect square. The square of the number 12 is 3.464101615. I know my number is not a perfect square because there are no two numbers that are the same that can be multiplied together to get 12. 12 My Special Number’s Prime Factorization. Prime factorization is finding which prime numbers multiply together to make my special number. 12 4 2 3 2 2∙2∙3 22 ∙ 3 13