Rational and irrational numbers play an important role in our lives, whether we are aware of it or not.

What is a Rational and Irrational Number?

A rational number is a number that can be written as a fraction, while an irrational number is a number that cannot be written as a fraction. Rational numbers can be found on the number line, while irrational numbers arise from taking square roots of non-perfect squares.

Uses for Rational Numbers in Real Life

    • Mathematics and Sciences – Rational numbers are a fundamental part of mathematics and sciences, used to express equations and measurements.
    • Finance – They are helpful in calculating tax and interest, negotiating loans, understanding financial statements and stocks, analyzing profit and loss and making investments.
    • Cooking – Rational numbers are used in cooking to measure ingredients.
    • Navigation – They are used by sailors to calculate the coordinates and distances in order to navigate.

Uses for Irrational Numbers in Real Life

    • Geometry – Irrational numbers are used in geometry to calculate the length of a circumference or the area of a circle.
    • Engineering – They are essential for engineering and structural calculations, such as determining the strength or support of a structure.

In conclusion, rational and irrational numbers are important to everyday life, as they help us to understand, measure, calculate and navigate the world around us. They are so prevalent in our lives that we often don’t even realize that we are using them.

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