Sum of numbers

Improve your math skills with this summation application from simple sums to incredibly complicated sums, do you think adding is easy? Try this app and test how good you are adding

- Improve your math skills
- Test your ability with sums
- Incredibly difficult levels
- Do it all mentally

Application for people of all ages since if you are a primary school child who wants to stand out more than others, even a mathematical genius who wants to put approve of his mind!