Play to learn!

Online educational tools to learn mathematics and the Russian language through play. Regular guided practice helps develop mental arithmetic skills and improve literacy. Check your knowledge and practice math skills through play. Good luck!

Mental Math Gym

An online multiplication table and mental arithmetic skill test. Choose any arithmetic operation, number of test questions and begin testing your addition, subtraction, division, and multiplication skills.

Arithmetic operation

Number of questions in the test

Trainer modes

Learning mode

Negative numbers

Large numbers

Text-based questions

An online school program-based Russian language vocabulary test. Indicate your grades, number of words in a test and start the Russian language dictation to practice the spelling of difficult words.


Number of words in the test

Trainer modes

Learning mode

Typing speed test mode

Allow е instead of ё

Questions on word meanings

Difficult questions

Learn from Leitner's system

To make it easier to remember the questions from the Blitztest trainers, the site features the smart repetition system. Choose the target you want and start studying.

All Mental Math Gym goals →

All Russian Language Vocabulary Trainer goals →

All World Countries Trainer goals →


Leitner system

August 23, 2021

The interval repetition system is automatically enabled for authorized users. Just choose a math, geography, or russian goal and start studying.

Meet the World Countries Trainer!

April 14, 2021

Geography is one of the fundamental sciences that define a person’s identity. Knowledge of geography allows you to better navigate the flow of information and understand the books and cultures of other nations. Use the World Countries Trainer to test your knowledge of the political map of the world or to learn new things about countries around the world.

The Vocabulary Trainer just got better and smarter

February 10, 2021

Changes have been made to the algorithm for selecting replacement letters and places in words for questions. Fixed a number of errors and filled missing accents in the database of vocabulary words. Adjusted the trainer skipping of certain places in words where users almost never make mistakes.