The summation of digits

Jan Kalop

Active Member
Joined
Aug 3, 2012
Messages
389
Having in A11 digit 1909 and entering in B11 formula "=SUM(VALUE(MID(A11,ROW($I$1:OFFSET($I$1,LEN(A11)-1,0)),1)))" with enter and shift, display in B11 digit 19


then entering in,C11 formula "=SUM(VALUE(MID(B11,ROW($I$1:OFFSET($I$1,LEN(B11)-1,0)),1)))" with enter and shift, display in C11 digit 10


then entering in,D11 formula "=SUM(VALUE(MID(C11,ROW($I$1:OFFSET($I$1,LEN(C11)-1,0)),1)))" with enter and shift, display in D11 digit 1


How can I get the end result form cell D11 in cell B11 with one compact formula calculating all those 3 calculations in one attempt.
 

Excel Facts

Test for Multiple Conditions in IF?
Use AND(test, test, test, test) or OR(test, test, test, ...) as the logical_test argument of IF.
The sum of digits iteratively applied is called the digital root.

[Table="width:, class:grid"][tr][td="bgcolor:#C0C0C0"][/td][td="bgcolor:#C0C0C0"]
A​
[/td][td="bgcolor:#C0C0C0"]
B​
[/td][td="bgcolor:#C0C0C0"]
C​
[/td][/tr][tr][td="bgcolor:#C0C0C0"]
11​
[/td][td]
1909​
[/td][td="bgcolor:#CCFFCC"]
1​
[/td][td="bgcolor:#CCFFCC"]B11: =IF(A11 = 0, 0, A11 - FLOOR(A11-1, 9))[/td][/tr]
[/table]


This is simpler, but a bug in the MOD function appears for large numbers:

=IF(A11 = 0, 0, MOD(A11-1, 9) + 1)

See http://excel.tips.net/T003302_Large_Numbers_in_the_MOD_Function.html)
 
Last edited:
Upvote 0
Hello,

You can test following Array Formula:

Code:
=SUM(VALUE(MID(A11,ROW(INDIRECT("1:"&LEN(A11))),1)))

HTH
 
Upvote 0
Summing digits of a number, non array

=SUMPRODUCT(--MID(A1,ROW(INDIRECT("1:" & LEN(A1))),1))
 
Last edited:
Upvote 0
Great, thanks a lot to all suggestions, but it seams that the first one suits me the best. Fantastic, thank you.
 
Upvote 0

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