Q: What is the negative version of the number 21,181,831?
A: -21,181,831
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:
| 21,181,829 | 21,181,830 | 21,181,832 | 21,181,833 |
| -21,181,829 | -21,181,830 | -21,181,832 | -21,181,833 |