> For the complete documentation index, see [llms.txt](https://docs.ngsurvey.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ngsurvey.com/form-management/form-designer/questions/question-types/advanced-types/untitled.md).

# Constant Sum

Constant sum is a method that will allow us to setup and group multiple constant sum fields together to ask the respondent to enter a values that will match the total value you have specified.

![](/files/-MBizc8gDuUQ80IUvAyg)

The respondent will need to answer each field with a number and the total of all fields must reach 100.

You may change the total sum to reach from the [question properties](/form-management/form-designer/questions/question-properties.md) page.

![](/files/-MBj-2BLxexNFz6LJogM)


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