Q: What is the negative version of the number 644,503,515?
A: -644,503,515
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:
| 644,503,513 | 644,503,514 | 644,503,516 | 644,503,517 |
| -644,503,513 | -644,503,514 | -644,503,516 | -644,503,517 |