Q: What is the negative version of the number 20,820,821?
A: -20,820,821
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:
| 20,820,819 | 20,820,820 | 20,820,822 | 20,820,823 |
| -20,820,819 | -20,820,820 | -20,820,822 | -20,820,823 |