Q: What is the negative version of the number 21,215,455?
A: -21,215,455
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:
| 21,215,453 | 21,215,454 | 21,215,456 | 21,215,457 |
| -21,215,453 | -21,215,454 | -21,215,456 | -21,215,457 |