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