What are Integers?  What are Sign Numbers?

What are Integers?

An integer is a whole number (not a fraction) that can
be positive, negative, or zero. Therefore, the numbers 10, 
0, -25, and 5,148 are all examples of integers. Integers
cannot have decimal places.

negative and positive number line

This number line shows examples of Integers

When two integers are added, subtracted, or multiplied, the result is
also an integer. However, when one integer is divided into another, 
the result may be an integer or a fraction. For example, 6 divided by
3 equals 2, which is an integer, but 6 divided by 4 equals 1.5, which
contains a fraction. Decimal numbers could by rounded to produce
an integer result.


Integers are sign numbers

Definition of sign numbers: a number preceded by a positive or
negative sign.


note: the number zero is an integer but it is not positive or negative