A positive number is a number that is bigger than zero. The set of all positive integers is written as .
A positive number can be written with a "+" symbol in front of it, or just as a number. For example, the numbers "+3" and "3" stand for the same numbers.
Positive numbers are written to the right of zero on a number line:
In the above line, the positive numbers 1, 2, 3, 4, 5 and 6 are shown.