Calculate the digit sum of 138
Calculate the reduced digit sum of 138
Add up 3 digits of 138:
Digit Sum → 1 + 3 + 8 = 12
Since our digit sum > 9:
repeat this process to get the reduced digit sum:
Our new number to evaluate is 12
Add up 2 digits of 12:
Digit Sum → 1 + 2 = 3
Since our digit sum ≤ 9:
we have our reduced digit sum
Final Answer
Digit Sum = 12
Reduced Digit Sum = 3
What is the Answer?
Digit Sum = 12
Reduced Digit Sum = 3
How does the Digit Sum Calculator work?
Free Digit Sum Calculator - Calculates a digit sum and reduced digit sum for a number.
This calculator has 1 input.
What 1 formula is used for the Digit Sum Calculator?
Add the digits together to get a sum. If the sum is greater than 10, keep adding the digits of the new sum until the sum is less than 10.
What 3 concepts are covered in the Digit Sum Calculator?
- digit
- Any of the numbers (0, 1, 2, 3, 4, 5, 6, 7, 8, 9) used to construct a number
- digit sum
- Adding the digits of a number and repeating the process of the sum until the final sum is less than 10
- sum
- the total amount resulting from the addition of two or more numbers, amounts, or items