Q: What is the negative version of the number 421,515,257?
A: -421,515,257
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:
| 421,515,255 | 421,515,256 | 421,515,258 | 421,515,259 |
| -421,515,255 | -421,515,256 | -421,515,258 | -421,515,259 |