Final answer:
The number that is 100 less than 2,791 is 2,691.
Step-by-step explanation:
To find the number that is 100 less than 2,791, you subtract 100 from 2,791.
2,791 - 100 = 2,691
So, the number that is 100 less than 2,791 is 2,691.
Learn more about Subtraction