Q: What is the negative version of the number 215,421,197?
A: -215,421,197
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:
| 215,421,195 | 215,421,196 | 215,421,198 | 215,421,199 |
| -215,421,195 | -215,421,196 | -215,421,198 | -215,421,199 |