Q: What is the negative version of the number 21,651,668?
A: -21,651,668
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:
| 21,651,666 | 21,651,667 | 21,651,669 | 21,651,670 |
| -21,651,666 | -21,651,667 | -21,651,669 | -21,651,670 |