How can you verify the sum of 27, 15, and 12 using addition?

To check the sum of the numbers 27, 15, and 12, you simply add these three numbers together. Here’s how you can do it step by step:

1. Start by adding the first two numbers: 27 and 15.
2. 27 + 15 = 42
3. Next, take the result from the previous addition (42) and add the third number (12) to it.
4. 42 + 12 = 54

So, the total sum of 27, 15, and 12 is 54. To ensure accuracy, you can reverse the process by breaking down the numbers:

• Instead of adding 27 and 15 first, you might add 15 and 12 to see if the total still equals 54.
• This gives you: 15 + 12 = 27.
• Then, add this result to 27: 27 + 27 = 54.

Both methods will lead you to the same correct total, confirming that your addition is indeed accurate!