Q: What is the negative version of the number 21,515,007?
A: -21,515,007
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:
| 21,515,005 | 21,515,006 | 21,515,008 | 21,515,009 |
| -21,515,005 | -21,515,006 | -21,515,008 | -21,515,009 |