Q: What is the negative version of the number 21,510,020?
A: -21,510,020
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:
| 21,510,018 | 21,510,019 | 21,510,021 | 21,510,022 |
| -21,510,018 | -21,510,019 | -21,510,021 | -21,510,022 |