Mathematics is not as difficult as it seems, just understand some little tricks in fact the basic operations are the same: addition, subtraction, multiplication, division. Test your mind and your skills with our quizzes, from the simplest to the most complex, passing through the Invalsi tests. It is a game, or rather a gym for your brain, which through questions and answers will help you make mental calculations faster. There are over 500 questions so start now and score the highest score, da