0.7 + 0.3 = 1 app for iPhone and iPad

This application generates an infinite sequence of operations with decimal numbers, in all possible combinations, in the following formats:

0.123 + ? = 1

0.123 + 0.1 = ?

0.123 x 100 = ?

12.3 : 1000 = ?

Therefore, to control the improvement in your skills, a detailed summary sheet is available, with all your exercises and answers.

In the "school" section you will find all the tricks to solve the various types of operations, with examples already solved.

After a few session of use, the decimal numbers definitely will have no more secrets!

App is suitable both for children and adults, also for the improvement of mental calculation.