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Irrational numbers and real numbers - simple introduction: https://www.matheretter.de/m/gru/irra... Math video: What are irrational numbers, repetition of the sets of numbers (natural numbers, whole numbers, rational numbers), proof that the square root of two cannot be represented as a fraction, introduction to irrational numbers. Real numbers consist of rational and irrational numbers. Irrational numbers: 1. cannot be represented as a fraction a/b 2. have an infinite number of decimal places 3. the decimal places are not periodic ++ Become a customer now: https://www.matheretter.de/ Math videos for pupils and students. To prepare for tests and math assignments. Learn math online quickly and easily! This video can be exchanged. Use in class permitted. # © Matheretter