Integer

An integer is a positive whole number (like 1, 2, 3 .. ),
a negative whole number (like -1, -2, -3 ... ),
or zero.
It is NOT a decimal number, or a fraction.
This number line consists of only integers:


 ...---|---|---|---|---|---|---|---|---|---|---|---|---|...
      -7  -6  -5  -4  -3  -2  -1   0  +1  +2  +3  +4  +5

Now, here's a problem for you:
What is the distance from +4 to -2?
(Count it off on the above number line)
Distance = _____

To learn more about negative integers and the number line, see the negative number notes.