Q: What is the negative version of the number 215,454,661?
A: -215,454,661
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:
| 215,454,659 | 215,454,660 | 215,454,662 | 215,454,663 |
| -215,454,659 | -215,454,660 | -215,454,662 | -215,454,663 |