Q: What is the negative version of the number 21,500,644?
A: -21,500,644
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:
| 21,500,642 | 21,500,643 | 21,500,645 | 21,500,646 |
| -21,500,642 | -21,500,643 | -21,500,645 | -21,500,646 |