Features:
* Arithmetic exercise - in this exercise you have to solve a given fraction task. You have to enter the numerator and the denominator. This is the main exercise.
* Comparison exercise - in this exercise you have to compare the size of 2 given fractions, using the symbols >, < or =.
* Conversion exercise - in this exercise you have to convert a given number into a fraction.
* Factorization exercise - in this exercise you have to factorize a given number into its prime factors.
* Percentage exercise - in this exercise you have to calculate percentages.