Problems with form calculation

Hi I have spent all day on this watched videos but still cant make it work, please help.

I just want the calculation to add up all the questions and if the answers are below 10 to send them client to a thank you page and if the answers are above 10 to send it to a different thank you page. I have tried it with and without hiding the calculation and it does not add them up.

Please see screen shot as it must be something simple but do not want to go on paid version until i get this sorted.

Thanks 

Final screen shot shows wrong landing page although the answers would have added up to over 10.

I have checked your form and it seems the calculation is not working due to the last + sign added in the formula.

Kindly remove the last addition + sign and let us know if the issue still remain.