Q: What is the negative version of the number 640,732,240?
A: -640,732,240
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:
| 640,732,238 | 640,732,239 | 640,732,241 | 640,732,242 |
| -640,732,238 | -640,732,239 | -640,732,241 | -640,732,242 |