Any integer, other than 0, has a positive as well as a negative version. 0 is the same as +0, and so the two are treated as a single number.
http://wiki.answers.com/Q/What_integer_can_be_posi...

An integer is a whole number that can't be a fraction. For example, a great example of an integer is 1 or 234 and even 234234. However it can't be 1.32 or 2.34.
http://www.ask.com/webanswers/Science/Mathematics...

1. Let us multiply (15/16) by (32/25) and divide by (2/18) Notice that these are all positive fractions. When multiplying fractions we multiply the numerators and then multiply the
http://www.ehow.com/how_5260482_multiplypositive...

Since integers can't contain a decimal place, and the "bigger" the negative
http://www.chacha.com/question/whatisthelargest...
