Q: What is the negative version of the number 217,310,209?
A: -217,310,209
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:
| 217,310,207 | 217,310,208 | 217,310,210 | 217,310,211 |
| -217,310,207 | -217,310,208 | -217,310,210 | -217,310,211 |