Q: What is the negative version of the number 81,671,821?
A: -81,671,821
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:
| 81,671,819 | 81,671,820 | 81,671,822 | 81,671,823 |
| -81,671,819 | -81,671,820 | -81,671,822 | -81,671,823 |