Posted by **daniel** on Thursday, August 29, 2013 at 9:02pm.

my mommy and daddy cant explain

explain what is wrong with the reasoning number 5 is a composite number because it has the factors 2 and 2.5

i know its a prime number but i cant explain the answer to the question above.

- 5th grade math help -
**Ms. Sue**, Thursday, August 29, 2013 at 9:06pm
A Prime Number can be divided evenly only by 1, or itself.

And **it must be a whole number** greater than 1.

http://www.mathsisfun.com/definitions/prime-number.html

- Ms Sue -
**daniel**, Thursday, August 29, 2013 at 9:08pm
why is it not a composite number

- 5th grade math help -
**Ms. Sue**, Thursday, August 29, 2013 at 9:13pm
It's not a composite number because it's a prime number.

Study this site.

http://www.mathsisfun.com/definitions/composite-number.html

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