Kbruch hè un picculu prugramma per praticà u calculu cù frazioni è percentuali. Esercizii diffirenti sò furniti per questu scopu è pudete aduprà u modu d'apprendimentu per praticà cun frazioni. U prugramma cuntrolla l'input di l'utilizatore è dà feedback.

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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.