# I need a form that has a simple calculation behind it.

• prowl00
Asked on February 05, 2015 at 08:51 PM

I am asking a question using checkboxes with 5 options.

When users select an option the form calculates the values and adds it to a field at the bottom.

Normally each selection has a value of 1 so if a user selects the third option then the number that is added is 3 and so on.

The issues here is that the calculation needs to start from 0 not 1. Is there any way to do this Jot Form? I was trying to see if there was a way to minus 1 point from the end result whenever the first selection was chosen. Not sure this is possible?

So as an example in the first five questions if the first answer was 1 and the rest 2s then the total would be 8 instead of 9

So the first option in every line is a zero the second option is 1, the third option is 2 and so on.

As a user completes the form the number is added and displays an image that represents what the total is so if the total is 10 the image that displays represents a 10.

You can view a sample of the form here http://form.jotform.ca/form/42983937062262?

• jonathan
Answered on February 05, 2015 at 10:23 PM

I suggest reviewing this 2 JotForm user guides which describe how to achieve this.

first, you need to Assign Calculation Value to options in your form

Then, create the calculations...

The 1st assign value doesn't have to be at zero(0), assign a positive number then and just add calculation to get total result.

You can test my demo form http://www.jotformpro.com/form/50357948598979

The assign value is 1-5 (/3 because there are 3 items)

Hope this help. Let us know if there is more we can assist you with.

Thanks.