Short Answer 
To add numbers like 7826, 888, and 367, first align them vertically by place value, then add each column starting from the rightmost. If column totals exceed 10, carry over to the next column, resulting in a final sum of 9081.
Step 1: Align the Numbers
Begin by placing the numbers you want to add in a vertical column format, ensuring that each digit is aligned according to its place value. This means you should have units under units, tens under tens, and so forth. For the numbers 7826, 888, and 367, write them as:
- 7826
- 888
- 367
Step 2: Add Each Column
Starting from the rightmost column (the units), begin adding the digits in each column. If the total of a column exceeds 10, carry over the extra value to the next column on the left. For example:
- Units: 6 + 8 + 7 = 21, write down 1 and carry 2.
- Tens: 2 (carried over) + 2 + 8 + 6 = 18, write down 8 and carry 1.
- Hundreds: 1 (carried over) + 7 + 0 + 3 = 11, write down 1 and carry 1.
- Thousands: 1 (carried over) + 7 = 8.
Step 3: Write the Final Sum
After adding each column and carrying over as necessary, compile the results from each column to form the total sum. Write down the results in order from left to right to get the final sum. Following the calculations, the sum of 7826, 888, and 367 will result in:
- Total: 9081