Our smart hamster is ready to play with you again in the game Hamster grid rounding, and at the same time to test your attentiveness and acquired knowledge in a math lesson. As you already know, our hero is unusual. To make him run up the stairs, you need to correctly solve the examples from the math problems written on the rungs on which he must run. Choose the difficulty level, or better just start with a simple one to get comfortable and understand the principle of the game. When answering a question, you must select an answer on the right vertical panel by clicking on the desired number. All examples are round. If the number is 21-24, then the answer is 20, if 25 or higher, the answer is 30. Time will run in the opposite direction, but it will recover from correct answers.