Yes. A real number is any number that could be plotted on a number line. For example, 3/4 could be plotted on a number line, and so it is real. Only square roots of negative numbers are not real: they are called imaginary.
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Fractions are real numbers.
Integer numbers are a subset of real numbers. Real numbers may contain fractions.
Real numbers include both positive and negative numbers, and also zero; also included are integers and fractions, including all types of fractions (rational, irrational, or transcendental). Only imaginary numbers are not real.
They are all real numbers. All fractions can be expressed as percentages but not all percentages can be represented as fractions.
All irrational numbers are real, but not all real numbers are irrational.