Digit sum method

This video shows you how to find a digit sum of a number and a reduced digit sum of a number.

Calculator:
https://www.mathcelebrity.com/digit-sum.php

1. Digit Sum Definition Add up all the digits in a number ‹#›

2. Digit Sum Example 586 Digit Sum = 5 + 8 + 6 Digit Sum = 19 ‹#›

3. Reduced Digit Sum Definition Take the Digit Sum If it’s greater than 10, perform another digit sum on the digit sum Continue until the digit sum is less than 10 ‹#›

4. Reduced Digit Sum Example 586 - Digit Sum = 5 + 8 + 6 Digit Sum = 19 Since the digit sum > 9, take the digit sum of 19. 1 + 9 = 10 Since the digit sum > 9, take the digit sum of 10. 1 + 0 = 1 ‹#›

5. Digit Sum Demo Go to mathcelebrity.com In the search box, type any of the following: Digit Sum for 297 Digit sum ‹#›