Arithmetic Challenge

According to the operation method, it can be divided into four modes: addition, subtraction, multiplication and division.
In the mode, the life bar time is above. According to the formula below, click one of the four number buttons in the middle and fill in the question mark position in the formula. In this way, the formula is established. If you make a wrong choice, the life bar time above will be subtracted. If the life bar is empty, the game fails and the answering mode is jumped out. If you choose correctly, you will jump to the next question and the life bar time will be filled again;
One point will be added for each correct answer. When a certain score is accumulated, the level will increase, the game difficulty will also increase, and the answering time (life bar) will decrease;
The game is divided into two difficulty modes. If you want to challenge the difficulty, select the button at the bottom of the menu page;