The sum of 16 and 75 is:

$16 + 75 = 91$

Would you like more details on how addition works or have any other questions?

Here are 5 related questions you could explore:

1. What is $91 + 24$?
2. How do you add larger numbers quickly?
3. Can you explain the properties of addition?
4. What is the difference between addition and multiplication?
5. How can addition be used in solving word problems?

Tip: When adding numbers, grouping them into tens can make the process faster and easier!