Q: What is the negative version of the number 215,421,155?
A: -215,421,155
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:
| 215,421,153 | 215,421,154 | 215,421,156 | 215,421,157 |
| -215,421,153 | -215,421,154 | -215,421,156 | -215,421,157 |