Q: What is the negative version of the number 21,557,813?
A: -21,557,813
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:
| 21,557,811 | 21,557,812 | 21,557,814 | 21,557,815 |
| -21,557,811 | -21,557,812 | -21,557,814 | -21,557,815 |