Mental Mathematics: What's 9 +

This app allows you to train your brain in different mental math categories, such as sum, subtraction, multiplication, division, percentages, remainders, factorials, etc..



Different leader-boards are shown, so you can compete on any category. Levels change based on your score, the higher the score the more difficult it will get.





Do you like maths? Do you like arithmetic? If so, give this free app a go.