Q: What is the negative version of the number 21,511,155?
A: -21,511,155
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:
| 21,511,153 | 21,511,154 | 21,511,156 | 21,511,157 |
| -21,511,153 | -21,511,154 | -21,511,156 | -21,511,157 |