Q: What is the negative version of the number 21,515,563?
A: -21,515,563
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:
| 21,515,561 | 21,515,562 | 21,515,564 | 21,515,565 |
| -21,515,561 | -21,515,562 | -21,515,564 | -21,515,565 |