Q: What is the negative version of the number 215,451,309?
A: -215,451,309
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:
| 215,451,307 | 215,451,308 | 215,451,310 | 215,451,311 |
| -215,451,307 | -215,451,308 | -215,451,310 | -215,451,311 |