Q: What is the negative version of the number 644,700,540?
A: -644,700,540
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:
| 644,700,538 | 644,700,539 | 644,700,541 | 644,700,542 |
| -644,700,538 | -644,700,539 | -644,700,541 | -644,700,542 |