Q: What is the negative version of the number 20,405,215?
A: -20,405,215
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:
| 20,405,213 | 20,405,214 | 20,405,216 | 20,405,217 |
| -20,405,213 | -20,405,214 | -20,405,216 | -20,405,217 |