Q: What is the negative version of the number 21,515,450?
A: -21,515,450
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:
| 21,515,448 | 21,515,449 | 21,515,451 | 21,515,452 |
| -21,515,448 | -21,515,449 | -21,515,451 | -21,515,452 |