Q: What is the negative version of the number 21,521,520?
A: -21,521,520
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:
| 21,521,518 | 21,521,519 | 21,521,521 | 21,521,522 |
| -21,521,518 | -21,521,519 | -21,521,521 | -21,521,522 |