Q: What is the negative version of the number 21,515,555?
A: -21,515,555
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:
| 21,515,553 | 21,515,554 | 21,515,556 | 21,515,557 |
| -21,515,553 | -21,515,554 | -21,515,556 | -21,515,557 |