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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.

For more math formulas, check out our Formula Dossier
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
Example calculations for the Digit Sum Calculator
  1. Digit Sum of 2
  2. Digit Sum of 3
  3. Digit Sum of 4
  4. Digit Sum of 5
  5. Digit Sum of 6
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Digit Sum Calculator Video

Digit Sum Calculator Video