Q: What is the negative version of the number 66,990,409?
A: -66,990,409
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:
| 66,990,407 | 66,990,408 | 66,990,410 | 66,990,411 |
| -66,990,407 | -66,990,408 | -66,990,410 | -66,990,411 |