Q: What is the negative version of the number 640,445,637?
A: -640,445,637
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:
| 640,445,635 | 640,445,636 | 640,445,638 | 640,445,639 |
| -640,445,635 | -640,445,636 | -640,445,638 | -640,445,639 |