Q: What is the negative version of the number 421,515,231?
A: -421,515,231
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:
| 421,515,229 | 421,515,230 | 421,515,232 | 421,515,233 |
| -421,515,229 | -421,515,230 | -421,515,232 | -421,515,233 |