Q: What is the negative version of the number 21,135,138?
A: -21,135,138
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:
| 21,135,136 | 21,135,137 | 21,135,139 | 21,135,140 |
| -21,135,136 | -21,135,137 | -21,135,139 | -21,135,140 |