Q: What is the negative version of the number 644,656,742?
A: -644,656,742
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:
| 644,656,740 | 644,656,741 | 644,656,743 | 644,656,744 |
| -644,656,740 | -644,656,741 | -644,656,743 | -644,656,744 |