Q: What is the negative version of the number 645,281,688?
A: -645,281,688
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:
| 645,281,686 | 645,281,687 | 645,281,689 | 645,281,690 |
| -645,281,686 | -645,281,687 | -645,281,689 | -645,281,690 |