Q: What is the negative version of the number 21,509,997?
A: -21,509,997
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:
| 21,509,995 | 21,509,996 | 21,509,998 | 21,509,999 |
| -21,509,995 | -21,509,996 | -21,509,998 | -21,509,999 |