What is the sum of 45 and 55?

To find the sum of 45 and 55, you simply add the two numbers together. Starting with 45, if you add 50, that brings you to 95. Adding an additional 5 to this will give you a total of 100. Thus, 45 plus 55 equals 100. This shows that the correct answer is indeed the sum of the two numbers, demonstrating basic addition skills. The approach taken in combining these numbers confirms the result aligns with fundamental arithmetic principles, ensuring accuracy in the calculation.