Q: What is the negative version of the number 645,521,211?
A: -645,521,211
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:
| 645,521,209 | 645,521,210 | 645,521,212 | 645,521,213 |
| -645,521,209 | -645,521,210 | -645,521,212 | -645,521,213 |