Q: What is the negative version of the number 81,121,221?
A: -81,121,221
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:
| 81,121,219 | 81,121,220 | 81,121,222 | 81,121,223 |
| -81,121,219 | -81,121,220 | -81,121,222 | -81,121,223 |