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Prime Factorization: 3/7/11 to 3/11/11

Sunday, March 6, 2011

Students have been given workbooks to practice for TCAP. This workbook is for them to keep. Please make sure they keep up with the book and practice their math by doing a minimum of 2-3 pages a week. These are not used as grades, however, again it is great practice for TCAP.

We will be working on Prime Factorization this week. Doing a little catch-up!

Some key concepts we will  be working on includes defining prime numbers, defining composite numbers, identifying prime numbers, identifying composite numbers, making factor trees, and making factor trees using exponents.

  • Prime Numbers: Numbers that are only divisible by 1 and the number itself
  • Example: 2, 3, 5, 7, 11; All of these numbers are only divisible by 1 and the number itself
  • Composite Numbers: Numbers that are divisible by more than two factors.
  • Factors: Factors are numbers that divide exactly/evenly into a larger number; multiples of a number
  • Example: 4, 6, 8, 9, 10, 12; All of these numbers have more than two factors.
  • 1x4=4, 2x2=4 / 1x6=6, 2x3=6 / 1x8=8, 2x4=8 / 1x9=9, 3x3=9 / 1x10=10, 2x5=10 / 1x12=12, 2x6=12, 3x4=12 


Students will be tested on TCAP for prime factorization for numbers up to 50. (Please note: 1 is neither prime nor composite.)


  • Prime numbers:
  •  2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47

  • Composite numbers:
  • 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22, 24, 25, 26, 27, 28, 30, 32, 33, 34, 35, 36, 38, 39, 40, 42, 44, 45, 46, 48, 49, 50

Interactive Factor Trees Practice
    MORE TO COME SOON! 


    Signing off, Mrs. Burger :-)

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    About Me

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    My name is Mrs. Hanah Burger. This is my 4th year teaching 5th grade math at Blythe-Bower Elementary, and I love what I do. My goal is to make as many math nerds out there to love numbers and change the world with their knowledge! I just finished my Masters, and I hope to one day go back for my EDs. I have two amazing kiddos, Mikaela (6) and Peyton (3), as well as a great hubby, Jonathan. They mean the world to me. :0D

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