Q: What is the negative version of the number 21,555,210?
A: -21,555,210
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:
| 21,555,208 | 21,555,209 | 21,555,211 | 21,555,212 |
| -21,555,208 | -21,555,209 | -21,555,211 | -21,555,212 |