Mathematics 1 + 1 (grade 1) is a mathematics app that includes a set of tests for grade 1 students. It is intended to help children learn mathematics in a fun and interactive way. It contains a variety of exercises, including addition and subtraction. It also has a test with the ability to save and share the results with friends.

This app can be used with children and is a good way to teach them mathematics. It can also be used with students and teachers to help them learn more about mathematics.

The app contains the following exercises:

Addition: Count up to 10 actions in addition and subtraction
Choosing which is greater than, less than, and equal
Duel on addition, subtraction