SUBTRACT

Requires: Write access to configure a questionnaire calculation.

Subtracts numeric values. Input: selected numeric lists. Output: one result, or transformed lists in Per item mode.

With Per item on, computes Value − each input. Example: Value 10, [2, 4] → [8, 6].

With it off, subtracts the first value of each explicitly selected input in selection order: 10, 3, 2 → 5. If no selected input resolves, it falls back to the first stored input's list. Always select inputs explicitly; do not rely on this fallback.

Shared rules · Calculation examples · Unexpected result.