Q: What is the negative version of the number 644,633,500?
A: -644,633,500
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:
| 644,633,498 | 644,633,499 | 644,633,501 | 644,633,502 |
| -644,633,498 | -644,633,499 | -644,633,501 | -644,633,502 |