Choose the name of the country of the flag that appears on the screen and try to beat your high score. If you fail 3 times you will lose and have to start again from_ scratch.
Try to perform as many correct operations as possible before the time runs out. Make your record number of points. If you get it right, you will get 10 points, but if you fail, 5 points will be subtracted. Choose the sign you have to place for the operation to be correct.
Choose the name of the country of the flag that appears on the screen and try to beat your high score. If you fail 3 times you will lose and have to start again from_ scratch.