Q: What is the negative version of the number 20,515,215?
A: -20,515,215
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:
| 20,515,213 | 20,515,214 | 20,515,216 | 20,515,217 |
| -20,515,213 | -20,515,214 | -20,515,216 | -20,515,217 |