Q: What is the negative version of the number 221,420,309?
A: -221,420,309
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:
| 221,420,307 | 221,420,308 | 221,420,310 | 221,420,311 |
| -221,420,307 | -221,420,308 | -221,420,310 | -221,420,311 |