Q: What is the negative version of the number 21,505,143?
A: -21,505,143
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:
| 21,505,141 | 21,505,142 | 21,505,144 | 21,505,145 |
| -21,505,141 | -21,505,142 | -21,505,144 | -21,505,145 |