Q: What is the negative version of the number 21,911,780?
A: -21,911,780
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:
| 21,911,778 | 21,911,779 | 21,911,781 | 21,911,782 |
| -21,911,778 | -21,911,779 | -21,911,781 | -21,911,782 |