Q: What is the negative version of the number 644,015,478?
A: -644,015,478
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:
| 644,015,476 | 644,015,477 | 644,015,479 | 644,015,480 |
| -644,015,476 | -644,015,477 | -644,015,479 | -644,015,480 |