Q: What is the negative version of the number 661,665,311?
A: -661,665,311
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:
| 661,665,309 | 661,665,310 | 661,665,312 | 661,665,313 |
| -661,665,309 | -661,665,310 | -661,665,312 | -661,665,313 |