Q: What is the negative version of the number 664,643,242?
A: -664,643,242
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:
| 664,643,240 | 664,643,241 | 664,643,243 | 664,643,244 |
| -664,643,240 | -664,643,241 | -664,643,243 | -664,643,244 |