Calculate the digit sum of 398
Calculate the reduced digit sum of 398
Add up 3 digits of 398:
Digit Sum → 3 + 9 + 8 = 20
Since our digit sum > 9:
repeat this process to get the reduced digit sum:
Our new number to evaluate is 20
Add up 2 digits of 20:
Digit Sum → 2 + 0 = 2
Since our digit sum ≤ 9:
we have our reduced digit sum
Final Answer
Digit Sum = 20
Reduced Digit Sum = 2
Reduced Digit Sum = 2
