Math Filters Alternate Sum Alternate Sum is a different term of the Alt Sums filter (P34ID:AS).
The Alt Sums filter is a so called "math filter". Math filters are created through calculations. In this case starting with the highest digit of the number the digits are alternately subtracted and added to create the Alt Sums between 0 and 9. To learn more about the use of the AS filter select one of the links below:
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