Q: What is the negative version of the number 21,551,780?
A: -21,551,780
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:
| 21,551,778 | 21,551,779 | 21,551,781 | 21,551,782 |
| -21,551,778 | -21,551,779 | -21,551,781 | -21,551,782 |