Kbruch és un petit programa per practicar el càlcul amb fraccions i percentatges. Es proporcionen diferents exercicis per a aquest propòsit i podeu utilitzar el mode d’aprenentatge per practicar amb fraccions. El programa comprova l’entrada de l’usuari i dóna comentaris.

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• 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.