Calculate the digit sum of 438
Calculate the reduced digit sum of 438
Add up 3 digits of 438:
Digit Sum → 4 + 3 + 8 = 15
Since our digit sum > 9:
repeat this process to get the reduced digit sum:
Our new number to evaluate is 15
Add up 2 digits of 15:
Digit Sum → 1 + 5 = 6
Since our digit sum ≤ 9:
we have our reduced digit sum
Final Answer
Digit Sum = 15
Reduced Digit Sum = 6
Reduced Digit Sum = 6
