Q: What is the negative version of the number 21,515,812?
A: -21,515,812
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:
| 21,515,810 | 21,515,811 | 21,515,813 | 21,515,814 |
| -21,515,810 | -21,515,811 | -21,515,813 | -21,515,814 |