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• Substract Exercise 1 (numb. between 1-10)
• Substract Exercise 2 (numb. between 10-20)
• Substract Exercise 3 (numb. between 20-30)
• Substract Exercise 4 (numb. between 30-40)

• Substract Exercise 1 (numb. between 1-10)
• Substract Exercise 2 (numb. between 10-20)
• Substract Exercise 3 (numb. between 20-30)
• Substract Exercise 4 (numb. between 30-40)

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