Q: What is the negative version of the number 421,515,251?
A: -421,515,251
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:
| 421,515,249 | 421,515,250 | 421,515,252 | 421,515,253 |
| -421,515,249 | -421,515,250 | -421,515,252 | -421,515,253 |