Q: What is the negative version of the number 640,020,438?
A: -640,020,438
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:
| 640,020,436 | 640,020,437 | 640,020,439 | 640,020,440 |
| -640,020,436 | -640,020,437 | -640,020,439 | -640,020,440 |