Wednesday, November 18, 2009

Prime numbers and prime facotrs.

What we have learned today:
1.) Square numbers (perfect squares) are the product of a whole number when it is multiplied to itself. Eg. 4= 2x2. Therefore 4 is a square number.

2.) Factors are whole numbers that divides evenly into a whole number, leaving no remainder.
Eg. Factors of 16:
1 2 4 8 16

3.) Prime numbers are whole numbers greater than one, that have only two factors, which is one (1) and itself.
Examples of prime numbers are 2, 3, 5, 7, 11.
PS: One (1) is NOT a prime number. Why? Because it only has one factor, which is itself.

4.) Prime factors are the least possible factors of a number; must always be a prime number. The Prime Factorization method is used to get the prime factors of a number. (factor tree)
Eg. 18
/\
9 2
/\ \
3 3 2 = Prime factors.

4 comments:

abby 8-73 November 18, 2009 at 10:12 PM  

good job Hannah!! now I know what you guys did in math even im not in school today.. (:

Eric.P 8-73 November 24, 2009 at 6:34 PM  

Good job Hannah but you didn't need to make some of the words really big.

Camille873 November 24, 2009 at 6:44 PM  

nice job hannah. but you shouldve put some pictures, but still nice job.

Jemineth873 January 26, 2010 at 10:31 PM  

good job hannah, but yea there couldve been pictures .

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