Q: What is the negative version of the number 21,408,215?
A: -21,408,215
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:
| 21,408,213 | 21,408,214 | 21,408,216 | 21,408,217 |
| -21,408,213 | -21,408,214 | -21,408,216 | -21,408,217 |