What is the sum of 13, 24, and 15?

To find the sum of the numbers 13, 24, and 15, you simply add them together.

Begin with the first two numbers:

13 + 24 equals 37.

Next, add the third number:

37 + 15 equals 52.

Thus, the total sum of 13, 24, and 15 is 52. This calculation demonstrates systematic addition: first combining the first two values to simplify the process, and then incorporating the last number. This is a fundamental arithmetic operation, and understanding how to manage and sequence addition is key in reaching the correct result.