Q: What is the negative version of the number 21,515,015?
A: -21,515,015
Negative numbers are usually written with - in front of them. They represent a number that is less than zero.
Here are more examples of negative numbers in sequence:
| 21,515,013 | 21,515,014 | 21,515,016 | 21,515,017 |
| -21,515,013 | -21,515,014 | -21,515,016 | -21,515,017 |