Q: What is the negative version of the number 21,509,018?
A: -21,509,018
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:
| 21,509,016 | 21,509,017 | 21,509,019 | 21,509,020 |
| -21,509,016 | -21,509,017 | -21,509,019 | -21,509,020 |